diff --git a/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md b/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md
index 4b915922cdf632d6a9cd711c43969227872c7c16..78862f62f902a838d2c859310e267c7553e70a7a 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-distributed-data.md
@@ -267,7 +267,7 @@ const options = {
     backup: false,
     autoSync: true,
     kvStoreType: distributedData.KVStoreType.SINGLE_VERSION,
-    schema: '',
+    schema: undefined,
     securityLevel: distributedData.SecurityLevel.S2,
 }
 try {
@@ -317,7 +317,7 @@ const options = {
     backup: false,
     autoSync: true,
     kvStoreType: distributedData.KVStoreType.SINGLE_VERSION,
-    schema: '',
+    schema: undefined,
     securityLevel: distributedData.SecurityLevel.S2,
 }
 try {
@@ -365,7 +365,7 @@ const options = {
     backup : false,
     autoSync : true,
     kvStoreType : distributedData.KVStoreType.SINGLE_VERSION,
-    schema : '',
+    schema : undefined,
     securityLevel : distributedData.SecurityLevel.S2,
 }
 try {
@@ -414,7 +414,7 @@ const options = {
     backup : false,
     autoSync : true,
     kvStoreType : distributedData.KVStoreType.SINGLE_VERSION,
-    schema : '',
+    schema : undefined,
     securityLevel : distributedData.SecurityLevel.S2,
 }
 try {
diff --git a/zh-cn/application-dev/reference/apis/js-apis-distributedKVStore.md b/zh-cn/application-dev/reference/apis/js-apis-distributedKVStore.md
index c31394ac6d2fb568c422aa954ef95d94b1724c82..5e6485602684792a4d5230e7ee231d390dfc13cc 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-distributedKVStore.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-distributedKVStore.md
@@ -444,7 +444,7 @@ const options = {
     backup: false,
     autoSync: true,
     kvStoreType: distributedKVStore.KVStoreType.SINGLE_VERSION,
-    schema: '',
+    schema: undefined,
     securityLevel: distributedKVStore.SecurityLevel.S2,
 }
 try {
@@ -500,7 +500,7 @@ const options = {
     backup: false,
     autoSync: true,
     kvStoreType: distributedKVStore.KVStoreType.SINGLE_VERSION,
-    schema: '',
+    schema: undefined,
     securityLevel: distributedKVStore.SecurityLevel.S2,
 }
 try {
@@ -555,7 +555,7 @@ const options = {
     backup: false,
     autoSync: true,
     kvStoreType: distributedKVStore.KVStoreType.SINGLE_VERSION,
-    schema: '',
+    schema: undefined,
     securityLevel: distributedKVStore.SecurityLevel.S2,
 }
 try {
@@ -619,7 +619,7 @@ const options = {
     backup: false,
     autoSync: true,
     kvStoreType: distributedKVStore.KVStoreType.SINGLE_VERSION,
-    schema: '',
+    schema: undefined,
     securityLevel: distributedKVStore.SecurityLevel.S2,
 }
 try {