diff --git a/addon/v1alpha1/0000_00_addon.open-cluster-management.io_clustermanagementaddons.crd.yaml b/addon/v1alpha1/0000_00_addon.open-cluster-management.io_clustermanagementaddons.crd.yaml
index 96ff13c4a..35d89cfc4 100644
--- a/addon/v1alpha1/0000_00_addon.open-cluster-management.io_clustermanagementaddons.crd.yaml
+++ b/addon/v1alpha1/0000_00_addon.open-cluster-management.io_clustermanagementaddons.crd.yaml
@@ -30,6 +30,8 @@ spec:
           ManagedClusterAddOn resource. ClusterManagementAddOn is a cluster-scoped
           resource.
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
diff --git a/addon/v1alpha1/types_clustermanagementaddon.go b/addon/v1alpha1/types_clustermanagementaddon.go
index 44147b61f..75f5462c6 100644
--- a/addon/v1alpha1/types_clustermanagementaddon.go
+++ b/addon/v1alpha1/types_clustermanagementaddon.go
@@ -23,6 +23,7 @@ type ClusterManagementAddOn struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// spec represents a desired configuration for the agent on the cluster management add-on.
+	// +kubebuilder:validation:Required
 	// +required
 	Spec ClusterManagementAddOnSpec `json:"spec"`
 
diff --git a/cluster/v1/0000_00_clusters.open-cluster-management.io_managedclusters.crd.yaml b/cluster/v1/0000_00_clusters.open-cluster-management.io_managedclusters.crd.yaml
index b2ce74cf0..bc2613d6c 100644
--- a/cluster/v1/0000_00_clusters.open-cluster-management.io_managedclusters.crd.yaml
+++ b/cluster/v1/0000_00_clusters.open-cluster-management.io_managedclusters.crd.yaml
@@ -43,6 +43,8 @@ spec:
           on the ManagedCluster pushes the credential to the hub to use against the
           kube-apiserver of the ManagedCluster."
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -60,6 +62,8 @@ spec:
             description: Spec represents a desired configuration for the agent on
               the managed cluster.
             type: object
+            required:
+            - hubAcceptsClient
             properties:
               hubAcceptsClient:
                 description: hubAcceptsClient represents that hub accepts the joining
@@ -80,6 +84,7 @@ spec:
                   60 seconds by default
                 type: integer
                 format: int32
+                default: 60
               managedClusterClientConfigs:
                 description: ManagedClusterClientConfigs represents a list of the
                   apiserver address of the managed cluster. If it is empty, the managed
diff --git a/cluster/v1/types.go b/cluster/v1/types.go
index 1c6acaeed..f656a4eee 100644
--- a/cluster/v1/types.go
+++ b/cluster/v1/types.go
@@ -35,6 +35,8 @@ type ManagedCluster struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec represents a desired configuration for the agent on the managed cluster.
+	// +kubebuilder:validation:Required
+	// +required
 	Spec ManagedClusterSpec `json:"spec"`
 
 	// Status represents the current status of joined managed cluster
@@ -59,11 +61,13 @@ type ManagedClusterSpec struct {
 	// the namespace to grant the permision of access from the agent on the managed cluster.
 	// When the value is set to false, the namespace representing the managed cluster is
 	// deleted.
+	// +kubebuilder:validation:Required
 	// +required
 	HubAcceptsClient bool `json:"hubAcceptsClient"`
 
 	// LeaseDurationSeconds is used to coordinate the lease update time of Klusterlet agents on the managed cluster.
 	// If its value is zero, the Klusterlet agent will update its lease every 60 seconds by default
+	// +kubebuilder:default:=60
 	// +optional
 	LeaseDurationSeconds int32 `json:"leaseDurationSeconds,omitempty"`
 }
diff --git a/cluster/v1alpha1/0000_00_clusters.open-cluster-management.io_managedclustersets.crd.yaml b/cluster/v1alpha1/0000_00_clusters.open-cluster-management.io_managedclustersets.crd.yaml
index e38178678..0ae4d794d 100644
--- a/cluster/v1alpha1/0000_00_clusters.open-cluster-management.io_managedclustersets.crd.yaml
+++ b/cluster/v1alpha1/0000_00_clusters.open-cluster-management.io_managedclustersets.crd.yaml
@@ -28,6 +28,8 @@ spec:
           to update this label, user must have the permission on both the old and
           new ManagedClusterSet."
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
diff --git a/cluster/v1alpha1/0000_01_clusters.open-cluster-management.io_managedclustersetbindings.crd.yaml b/cluster/v1alpha1/0000_01_clusters.open-cluster-management.io_managedclustersetbindings.crd.yaml
index 8a532f4e0..2f0f2261b 100644
--- a/cluster/v1alpha1/0000_01_clusters.open-cluster-management.io_managedclustersetbindings.crd.yaml
+++ b/cluster/v1alpha1/0000_01_clusters.open-cluster-management.io_managedclustersetbindings.crd.yaml
@@ -22,6 +22,8 @@ spec:
           created in the same namespace can only be distributed to ManagedClusters
           in ManagedClusterSets bound in this namespace by higher level controllers.
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -38,6 +40,8 @@ spec:
           spec:
             description: Spec defines the attributes of ManagedClusterSetBinding.
             type: object
+            required:
+            - clusterSet
             properties:
               clusterSet:
                 description: ClusterSet is the name of the ManagedClusterSet to bind.
diff --git a/cluster/v1alpha1/0000_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml b/cluster/v1alpha1/0000_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml
index 11fa847a4..c9eb9da26 100644
--- a/cluster/v1alpha1/0000_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml
+++ b/cluster/v1alpha1/0000_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml
@@ -21,6 +21,8 @@ spec:
           an identifier that relates the cluster      to the ClusterSet in which it
           belongs.
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -37,6 +39,8 @@ spec:
           spec:
             description: Spec defines the attributes of the ClusterClaim.
             type: object
+            required:
+            - value
             properties:
               value:
                 description: Value is a claim-dependent string
diff --git a/cluster/v1alpha1/0001_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml b/cluster/v1alpha1/0001_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml
index 4ab960857..5579f2591 100644
--- a/cluster/v1alpha1/0001_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml
+++ b/cluster/v1alpha1/0001_02_clusters.open-cluster-management.io_clusterclaims.crd.yaml
@@ -18,6 +18,8 @@ spec:
         a unique identifier for the cluster.   2. clusterset.k8s.io, it contains an
         identifier that relates the cluster      to the ClusterSet in which it belongs.
       type: object
+      required:
+      - spec
       properties:
         apiVersion:
           description: 'APIVersion defines the versioned schema of this representation
@@ -34,6 +36,8 @@ spec:
         spec:
           description: Spec defines the attributes of the ClusterClaim.
           type: object
+          required:
+          - value
           properties:
             value:
               description: Value is a claim-dependent string
diff --git a/cluster/v1alpha1/types.go b/cluster/v1alpha1/types.go
index bf89c9941..c5becba63 100644
--- a/cluster/v1alpha1/types.go
+++ b/cluster/v1alpha1/types.go
@@ -26,6 +26,8 @@ type ManagedClusterSet struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec defines the attributes of the ManagedClusterSet
+	// +kubebuilder:validation:Required
+	// +required
 	Spec ManagedClusterSetSpec `json:"spec"`
 
 	// Status represents the current status of the ManagedClusterSet
@@ -78,6 +80,8 @@ type ManagedClusterSetBinding struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec defines the attributes of ManagedClusterSetBinding.
+	// +kubebuilder:validation:Required
+	// +required
 	Spec ManagedClusterSetBindingSpec `json:"spec"`
 }
 
@@ -88,6 +92,8 @@ type ManagedClusterSetBindingSpec struct {
 	// User is allowed to set this field if they have an RBAC rule to CREATE on the
 	// virtual subresource of managedclustersets/bind.
 	// +kubebuilder:validation:MinLength=1
+	// +kubebuilder:validation:Required
+	// +required
 	ClusterSet string `json:"clusterSet"`
 }
 
@@ -120,14 +126,18 @@ type ClusterClaim struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec defines the attributes of the ClusterClaim.
-	Spec ClusterClaimSpec `json:"spec,omitempty"`
+	// +kubebuilder:validation:Required
+	// +required
+	Spec ClusterClaimSpec `json:"spec"`
 }
 
 type ClusterClaimSpec struct {
 	// Value is a claim-dependent string
 	// +kubebuilder:validation:MaxLength=1024
 	// +kubebuilder:validation:MinLength=1
-	Value string `json:"value,omitempty"`
+	// +kubebuilder:validation:Required
+	// +required
+	Value string `json:"value"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
diff --git a/operator/v1/0000_00_operator.open-cluster-management.io_klusterlets.crd.yaml b/operator/v1/0000_00_operator.open-cluster-management.io_klusterlets.crd.yaml
index 09f76b63e..3f9e6fa95 100644
--- a/operator/v1/0000_00_operator.open-cluster-management.io_klusterlets.crd.yaml
+++ b/operator/v1/0000_00_operator.open-cluster-management.io_klusterlets.crd.yaml
@@ -20,6 +20,8 @@ spec:
           in the same namespace to allow API requests to the hub for the registration
           protocol.
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -43,6 +45,8 @@ spec:
                   created on hub. The Klusterlet agent generates a random name if
                   it is not set, or discovers the appropriate cluster name on OpenShift.
                 type: string
+                maxLength: 63
+                pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
               externalServerURLs:
                 description: ExternalServerURLs represents the a list of apiserver
                   urls and ca bundles that is accessible externally If it is set empty,
@@ -70,6 +74,8 @@ spec:
                   set, the namespace of "open-cluster-management-agent" is used to
                   deploy agent.
                 type: string
+                maxLength: 63
+                pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
               registrationImagePullSpec:
                 description: RegistrationImagePullSpec represents the desired image
                   configuration of registration agent.
diff --git a/operator/v1/0000_01_operator.open-cluster-management.io_clustermanagers.crd.yaml b/operator/v1/0000_01_operator.open-cluster-management.io_clustermanagers.crd.yaml
index eba39a2f6..69a943967 100644
--- a/operator/v1/0000_01_operator.open-cluster-management.io_clustermanagers.crd.yaml
+++ b/operator/v1/0000_01_operator.open-cluster-management.io_clustermanagers.crd.yaml
@@ -19,6 +19,8 @@ spec:
           registration and work distribution for attached Klusterlets. ClusterManager
           will only be deployed in open-cluster-management-hub namespace.
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
diff --git a/operator/v1/0001_00_operator.open-cluster-management.io_klusterlets.crd.yaml b/operator/v1/0001_00_operator.open-cluster-management.io_klusterlets.crd.yaml
index aa6bf88c7..f060016ae 100644
--- a/operator/v1/0001_00_operator.open-cluster-management.io_klusterlets.crd.yaml
+++ b/operator/v1/0001_00_operator.open-cluster-management.io_klusterlets.crd.yaml
@@ -20,6 +20,8 @@ spec:
         in the same namespace to allow API requests to the hub for the registration
         protocol.
       type: object
+      required:
+      - spec
       properties:
         apiVersion:
           description: 'APIVersion defines the versioned schema of this representation
@@ -43,6 +45,8 @@ spec:
                 on hub. The Klusterlet agent generates a random name if it is not
                 set, or discovers the appropriate cluster name on OpenShift.
               type: string
+              maxLength: 63
+              pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
             externalServerURLs:
               description: ExternalServerURLs represents the a list of apiserver urls
                 and ca bundles that is accessible externally If it is set empty, managed
@@ -68,6 +72,8 @@ spec:
                 set, the namespace of "open-cluster-management-agent" is used to deploy
                 agent.
               type: string
+              maxLength: 63
+              pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
             registrationImagePullSpec:
               description: RegistrationImagePullSpec represents the desired image
                 configuration of registration agent.
diff --git a/operator/v1/types.go b/operator/v1/types.go
index e12f7f875..6ecdec525 100644
--- a/operator/v1/types.go
+++ b/operator/v1/types.go
@@ -17,6 +17,8 @@ type ClusterManager struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec represents a desired deployment configuration of controllers that govern registration and work distribution for attached Klusterlets.
+	// +kubebuilder:validation:Required
+	// +required
 	Spec ClusterManagerSpec `json:"spec"`
 
 	// Status represents the current status of controllers that govern the lifecycle of managed clusters.
@@ -138,7 +140,9 @@ type Klusterlet struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec represents the desired deployment configuration of Klusterlet agent.
-	Spec KlusterletSpec `json:"spec,omitempty"`
+	// +kubebuilder:validation:Required
+	// +required
+	Spec KlusterletSpec `json:"spec"`
 
 	// Status represents the current status of Klusterlet agent.
 	Status KlusterletStatus `json:"status,omitempty"`
@@ -150,6 +154,8 @@ type KlusterletSpec struct {
 	// The namespace must have a prefix of "open-cluster-management-", and if it is not set,
 	// the namespace of "open-cluster-management-agent" is used to deploy agent.
 	// +optional
+	// +kubebuilder:validation:MaxLength=63
+	// +kubebuilder:validation:Pattern=^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
 	Namespace string `json:"namespace,omitempty"`
 
 	// RegistrationImagePullSpec represents the desired image configuration of registration agent.
@@ -163,6 +169,8 @@ type KlusterletSpec struct {
 	// ClusterName is the name of the managed cluster to be created on hub.
 	// The Klusterlet agent generates a random name if it is not set, or discovers the appropriate cluster name on OpenShift.
 	// +optional
+	// +kubebuilder:validation:MaxLength=63
+	// +kubebuilder:validation:Pattern=^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
 	ClusterName string `json:"clusterName,omitempty"`
 
 	// ExternalServerURLs represents the a list of apiserver urls and ca bundles that is accessible externally
diff --git a/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml b/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml
index 665c87c5c..e21daed16 100644
--- a/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml
+++ b/work/v1/0000_00_work.open-cluster-management.io_manifestworks.crd.yaml
@@ -21,6 +21,8 @@ spec:
           on the hub, so that agent on the corresponding managed cluster can access
           this resource and deploy on the managed cluster.
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -155,6 +157,9 @@ spec:
                       description: ManifestCondition represents the conditions of
                         the resources deployed on a managed cluster.
                       type: object
+                      required:
+                      - conditions
+                      - resourceMeta
                       properties:
                         conditions:
                           description: Conditions represents the conditions of this
diff --git a/work/v1/0000_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml b/work/v1/0000_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml
index be11642f6..05ec688e9 100644
--- a/work/v1/0000_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml
+++ b/work/v1/0000_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml
@@ -23,6 +23,8 @@ spec:
           agent. The name of the appliedmanifestwork must be in the format of {hash
           of hub's first kube-apiserver url}-{manifestwork name}
         type: object
+        required:
+        - spec
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -39,6 +41,9 @@ spec:
           spec:
             description: Spec represents the desired configuration of AppliedManifestWork.
             type: object
+            required:
+            - hubHash
+            - manifestWorkName
             properties:
               hubHash:
                 description: HubHash represents the hash of the first hub kube apiserver
diff --git a/work/v1/0001_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml b/work/v1/0001_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml
index c42b3f33d..05a6b0752 100644
--- a/work/v1/0001_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml
+++ b/work/v1/0001_01_work.open-cluster-management.io_appliedmanifestworks.crd.yaml
@@ -24,6 +24,8 @@ spec:
         The name of the appliedmanifestwork must be in the format of {hash of hub's
         first kube-apiserver url}-{manifestwork name}
       type: object
+      required:
+      - spec
       properties:
         apiVersion:
           description: 'APIVersion defines the versioned schema of this representation
@@ -40,6 +42,9 @@ spec:
         spec:
           description: Spec represents the desired configuration of AppliedManifestWork.
           type: object
+          required:
+          - hubHash
+          - manifestWorkName
           properties:
             hubHash:
               description: HubHash represents the hash of the first hub kube apiserver
diff --git a/work/v1/types.go b/work/v1/types.go
index 74ebb2d7c..e3c049839 100644
--- a/work/v1/types.go
+++ b/work/v1/types.go
@@ -19,6 +19,8 @@ type ManifestWork struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec represents a desired configuration of work to be deployed on the managed cluster.
+	// +kubebuilder:validation:Required
+	// +required
 	Spec ManifestWorkSpec `json:"spec"`
 
 	// Status represents the current status of work.
@@ -157,10 +159,12 @@ const (
 // managed cluster.
 type ManifestCondition struct {
 	// ResourceMeta represents the group, version, kind, name and namespace of a resoure.
+	// +kubebuilder:validation:Required
 	// +required
 	ResourceMeta ManifestResourceMeta `json:"resourceMeta"`
 
 	// Conditions represents the conditions of this resource on a managed cluster.
+	// +kubebuilder:validation:Required
 	// +required
 	Conditions []metav1.Condition `json:"conditions"`
 }
@@ -214,7 +218,9 @@ type AppliedManifestWork struct {
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
 	// Spec represents the desired configuration of AppliedManifestWork.
-	Spec AppliedManifestWorkSpec `json:"spec,omitempty"`
+	// +kubebuilder:validation:Required
+	// +required
+	Spec AppliedManifestWorkSpec `json:"spec"`
 
 	// Status represents the current status of AppliedManifestWork.
 	// +optional
@@ -225,10 +231,12 @@ type AppliedManifestWork struct {
 type AppliedManifestWorkSpec struct {
 	// HubHash represents the hash of the first hub kube apiserver to identify which hub
 	// this AppliedManifestWork links to.
+	// +kubebuilder:validation:Required
 	// +required
 	HubHash string `json:"hubHash"`
 
 	// ManifestWorkName represents the name of the related manifestwork on the hub.
+	// +kubebuilder:validation:Required
 	// +required
 	ManifestWorkName string `json:"manifestWorkName"`
 }