diff --git a/api/v1alpha1/batchrelease_types.go b/api/v1alpha1/batchrelease_types.go
index 0e02e695..d003de3f 100644
--- a/api/v1alpha1/batchrelease_types.go
+++ b/api/v1alpha1/batchrelease_types.go
@@ -75,10 +75,11 @@ type BatchReleaseTerminationPolicyType string
 
 const (
 	// RetainCompletionPolicyType will retain the current state of workload
-	// when the batch release is completed or terminated.
+	// when the batch release is terminated.
 	RetainCompletionPolicyType BatchReleaseTerminationPolicyType = "Retain"
 	// PromoteCompletionPolicyType will promote all pods of workload to the
-	// latest revision when the batch release is completed or terminated.
+	// update revision when the batch release is terminated via setting
+	// workload paused=false and partition=null.
 	PromoteCompletionPolicyType BatchReleaseTerminationPolicyType = "Promote"
 )
 
diff --git a/pkg/controller/batchrelease/control/interface.go b/pkg/controller/batchrelease/control/interface.go
index 99e91880..5f0a28a9 100644
--- a/pkg/controller/batchrelease/control/interface.go
+++ b/pkg/controller/batchrelease/control/interface.go
@@ -65,9 +65,6 @@ type Interface interface {
 	// It might depend on if the rollout succeeded or not.
 	// For example, we may remove the objects which created by batchRelease.
 	// this function will always retry util it returns 'true'.
-	// parameters:
-	// - cleanup: 'true' means clean up canary resources, 'false' means do not clean up.
-	// - promote: 'true' means unpause workload and upgrade all pods, 'false' means do nothing.
 	Finalize() (bool, error)
 
 	// SyncWorkloadInformation will watch and compare the status recorded in Status of BatchRelease
diff --git a/pkg/controller/batchrelease/control/partitionstyle/interface.go b/pkg/controller/batchrelease/control/partitionstyle/interface.go
index 05152bfc..106a570d 100644
--- a/pkg/controller/batchrelease/control/partitionstyle/interface.go
+++ b/pkg/controller/batchrelease/control/partitionstyle/interface.go
@@ -8,9 +8,8 @@ import (
 )
 
 type Interface interface {
-	// BuildController will get workload object
-	// and parse workload info, and return a
-	// controller for workload
+	// BuildController will get workload object and parse workload info,
+	// and return a controller for workload
 	BuildController() (Interface, error)
 	// GetInfo return workload information
 	GetInfo() *util.WorkloadInfo