diff --git a/signature/jws/conformance_test.go b/signature/jws/conformance_test.go
new file mode 100644
index 00000000..6cf0cf03
--- /dev/null
+++ b/signature/jws/conformance_test.go
@@ -0,0 +1,180 @@
+package jws
+
+import (
+	"crypto/elliptic"
+	"crypto/x509"
+	"encoding/json"
+	"os"
+	"reflect"
+	"sort"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/notaryproject/notation-core-go/signature"
+	"github.com/notaryproject/notation-core-go/testhelper"
+)
+
+var (
+	// prepare signing time
+	signingTime, _ = time.Parse("2006-01-02 15:04:05", "2022-08-29 13:50:00")
+	expiry, _      = time.Parse("2006-01-02 15:04:05", "2099-08-29 13:50:00")
+	// signedAttributes for signing request
+	signedAttributes = signature.SignedAttributes{
+		SigningScheme: "notary.x509",
+		SigningTime:   signingTime.Truncate(time.Second),
+		Expiry:        expiry.Truncate(time.Second).Add(time.Hour * 24),
+		ExtendedAttributes: sortAttributes([]signature.Attribute{
+			{Key: "signedCritKey1", Value: "signedCritValue1", Critical: true},
+			{Key: "signedKey1", Value: "signedValue1", Critical: false},
+			{Key: "signedKey2", Value: "signedValue1", Critical: false},
+			{Key: "signedKey3", Value: "signedValue1", Critical: false},
+			{Key: "signedKey4", Value: "signedValue1", Critical: false},
+		}),
+	}
+	// unsignedAttributes for signing request
+	unsignedAttributes = signature.UnsignedAttributes{
+		SigningAgent: "NotationConformanceTest/1.0.0",
+	}
+	// payload to be signed
+	payload = signature.Payload{
+		ContentType: "application/vnd.cncf.notary.payload.v1+json",
+		Content:     []byte("hello JWS"),
+	}
+	// certificate chain for signer
+	leafCertTuple = testhelper.GetECCertTuple(elliptic.P256())
+	certs         = []*x509.Certificate{leafCertTuple.Cert, testhelper.GetECRootCertificate().Cert}
+)
+
+func conformanceTestSignReq() *signature.SignRequest {
+	signer, err := signature.NewLocalSigner(certs, leafCertTuple.PrivateKey)
+	if err != nil {
+		panic(err)
+	}
+
+	return &signature.SignRequest{
+		Payload:                  payload,
+		Signer:                   signer,
+		SigningTime:              signedAttributes.SigningTime,
+		Expiry:                   signedAttributes.Expiry,
+		ExtendedSignedAttributes: signedAttributes.ExtendedAttributes,
+		SigningAgent:             unsignedAttributes.SigningAgent,
+		SigningScheme:            signedAttributes.SigningScheme,
+	}
+}
+
+// TestSignedMessageConformance check the conformance between the encoded message
+// and the valid encoded message in conformance.json
+//
+// check payload, protected and signingAgent section
+func TestSignedMessageConformance(t *testing.T) {
+	// get encoded message
+	env := envelope{}
+	signReq := conformanceTestSignReq()
+	encoded, err := env.Sign(signReq)
+	checkNoError(t, err)
+
+	// parse encoded message to be a map
+	envMap, err := unmarshalEncodedMessage(encoded)
+	checkNoError(t, err)
+	// load validation encoded message
+	validEnvMap, err := getValidEnvelopeMap()
+	checkNoError(t, err)
+
+	// check payload section conformance
+	if !reflect.DeepEqual(envMap["payload"], validEnvMap["payload"]) {
+		t.Fatal("signed message payload test failed.")
+	}
+
+	// check protected section conformance
+	if !reflect.DeepEqual(envMap["protected"], validEnvMap["protected"]) {
+		t.Fatal("signed message protected test failed.")
+	}
+
+	// prepare header
+	header, ok := envMap["header"].(map[string]interface{})
+	if !ok {
+		t.Fatal("signed message header format error.")
+	}
+	validHeader, ok := validEnvMap["header"].(map[string]interface{})
+	if !ok {
+		t.Fatal("conformance.json header format error.")
+	}
+	// check io.cncf.notary.signingAgent conformance
+	if !reflect.DeepEqual(header["io.cncf.notary.signingAgent"], validHeader["io.cncf.notary.signingAgent"]) {
+		t.Fatal("signed message signingAgent test failed.")
+	}
+}
+
+func getValidEnvelopeMap() (map[string]interface{}, error) {
+	encoded, err := os.ReadFile("./testdata/conformance.json")
+	if err != nil {
+		return nil, err
+	}
+	return unmarshalEncodedMessage(encoded)
+}
+
+func unmarshalEncodedMessage(encoded []byte) (envelopeMap map[string]interface{}, err error) {
+	err = json.Unmarshal(encoded, &envelopeMap)
+	return
+}
+
+// TestVerifyConformance generates JWS encoded message, parses the encoded message and
+// verify the payload, signed/unsigned attributes conformance.
+func TestVerifyConformance(t *testing.T) {
+	env := envelope{}
+	signReq := conformanceTestSignReq()
+	encoded, err := env.Sign(signReq)
+	checkNoError(t, err)
+
+	newEnv, err := ParseEnvelope(encoded)
+	checkNoError(t, err)
+
+	// verify validity
+	payload, signerInfo, err := newEnv.Verify()
+	checkNoError(t, err)
+
+	// check payload conformance
+	verifyPayload(t, payload)
+
+	// check signed/unsigned attributes conformance
+	verifyAttributes(t, signerInfo)
+}
+
+func verifyPayload(t *testing.T, gotPayload *signature.Payload) {
+	if !reflect.DeepEqual(&payload, gotPayload) {
+		t.Fatalf("verify payload failed. want: %+v got: %+v\n", &payload, gotPayload)
+	}
+}
+
+func verifyAttributes(t *testing.T, signerInfo *signature.SignerInfo) {
+	// check unsigned attributes
+	if !reflect.DeepEqual(&unsignedAttributes, &signerInfo.UnsignedAttributes) {
+		t.Fatalf("verify UnsignedAttributes failed. want: %+v got: %+v\n", &unsignedAttributes, &signerInfo.UnsignedAttributes)
+	}
+
+	// check signed attributes
+	sortAttributes(signerInfo.SignedAttributes.ExtendedAttributes)
+	if !reflect.DeepEqual(&signedAttributes, &signerInfo.SignedAttributes) {
+		t.Fatalf("verify SignedAttributes failed. want: %+v got: %+v\n", &signedAttributes, &signerInfo.SignedAttributes)
+	}
+
+	// check signature algorithm
+	keySpec, err := signature.ExtractKeySpec(certs[0])
+	checkNoError(t, err)
+	if keySpec.SignatureAlgorithm() != signerInfo.SignatureAlgorithm {
+		t.Fatalf("verify signature algorithm failed. want: %d got: %d\n", keySpec.SignatureAlgorithm(), signerInfo.SignatureAlgorithm)
+	}
+
+	// check certificate chain
+	if !reflect.DeepEqual(signerInfo.CertificateChain, certs) {
+		t.Fatalf("verify certificate chain failed. want: %+v got: %+v\n", &signerInfo.CertificateChain, certs)
+	}
+}
+
+func sortAttributes(attributes []signature.Attribute) []signature.Attribute {
+	sort.Slice(attributes, func(i, j int) bool {
+		return strings.Compare(attributes[i].Key, attributes[j].Key) < 0
+	})
+	return attributes
+}
diff --git a/signature/jws/testdata/conformance.json b/signature/jws/testdata/conformance.json
new file mode 100644
index 00000000..1b00ab13
--- /dev/null
+++ b/signature/jws/testdata/conformance.json
@@ -0,0 +1,8 @@
+{
+    "payload": "ImFHVnNiRzhnU2xkVCI",
+    "protected": "eyJhbGciOiJFUzI1NiIsImNyaXQiOlsiaW8uY25jZi5ub3Rhcnkuc2lnbmluZ1NjaGVtZSIsInNpZ25lZENyaXRLZXkxIiwiaW8uY25jZi5ub3RhcnkuZXhwaXJ5Il0sImN0eSI6ImFwcGxpY2F0aW9uL3ZuZC5jbmNmLm5vdGFyeS5wYXlsb2FkLnYxK2pzb24iLCJpby5jbmNmLm5vdGFyeS5leHBpcnkiOiIyMDk5LTA4LTMwVDEzOjUwOjAwWiIsImlvLmNuY2Yubm90YXJ5LnNpZ25pbmdTY2hlbWUiOiJub3RhcnkueDUwOSIsImlvLmNuY2Yubm90YXJ5LnNpZ25pbmdUaW1lIjoiMjAyMi0wOC0yOVQxMzo1MDowMFoiLCJzaWduZWRDcml0S2V5MSI6InNpZ25lZENyaXRWYWx1ZTEiLCJzaWduZWRLZXkxIjoic2lnbmVkVmFsdWUxIiwic2lnbmVkS2V5MiI6InNpZ25lZFZhbHVlMSIsInNpZ25lZEtleTMiOiJzaWduZWRWYWx1ZTEiLCJzaWduZWRLZXk0Ijoic2lnbmVkVmFsdWUxIn0",
+    "header": {
+        "io.cncf.notary.signingAgent": "NotationConformanceTest/1.0.0"
+    },
+    "signature": "2iu9nIOou8NjVUvOSQ8h0n-ZMyrh33quqXQNbmc1C7G7RmWngttZmh8TxcmuQshKtwN1LW8Jf3iqTHlhM6ggcQ"
+}
\ No newline at end of file