diff --git a/zh-cn/application-dev/ability/fa-dataability.md b/zh-cn/application-dev/ability/fa-dataability.md
index 0e3c0c91af883e4209fa27295f5de70bc9363a22..ae128df0968430bd132f8defc80de4eb93e5a1bd 100644
--- a/zh-cn/application-dev/ability/fa-dataability.md
+++ b/zh-cn/application-dev/ability/fa-dataability.md
@@ -10,18 +10,18 @@ Data提供方可以自定义数据的增、删、改、查，以及文件打开
 |接口名|描述|
 |:------|:------|
 |onInitialized?(info: AbilityInfo): void|在Ability初始化调用，通过此回调方法执行RDB等初始化操作。|
-|update?(uri: string, valueBucket: rdb.ValuesBucket, predicates: dataAbility.DataAbilityPredicates, callback: AsyncCallback<number>): void|更新数据库中的数据。|
-|query?(uri: string, columns: Array<string>, predicates: dataAbility.DataAbilityPredicates, callback: AsyncCallback<ResultSet>): void|查询数据库中的数据。|
-|delete?(uri: string, predicates: dataAbility.DataAbilityPredicates, callback: AsyncCallback<number>): void|删除一条或多条数据。|
-|normalizeUri?(uri: string, callback: AsyncCallback<string>): void|对URI进行规范化。一个规范化的URI可以支持跨设备使用、持久化、备份和还原等，当上下文改变时仍然可以引用到相同的数据项。|
-|batchInsert?(uri: string, valueBuckets: Array<rdb.ValuesBucket>, callback: AsyncCallback<number>): void|向数据库中插入多条数据。|
+|update?(uri: string, valueBucket: rdb.ValuesBucket, predicates: dataAbility.DataAbilityPredicates, callback: AsyncCallback\<number>): void|更新数据库中的数据。|
+|query?(uri: string, columns: Array\<string>, predicates: dataAbility.DataAbilityPredicates, callback: AsyncCallback\<ResultSet>): void|查询数据库中的数据。|
+|delete?(uri: string, predicates: dataAbility.DataAbilityPredicates, callback: AsyncCallback\<number>): void|删除一条或多条数据。|
+|normalizeUri?(uri: string, callback: AsyncCallback\<string>): void|对URI进行规范化。一个规范化的URI可以支持跨设备使用、持久化、备份和还原等，当上下文改变时仍然可以引用到相同的数据项。|
+|batchInsert?(uri: string, valueBuckets: Array\<rdb.ValuesBucket>, callback: AsyncCallback\<number>): void|向数据库中插入多条数据。|
 |denormalizeUri?(uri: string, callback: AsyncCallback<string>): void|将一个由normalizeUri生产的规范化URI转换成非规范化的URI。|
-|insert?(uri: string, valueBucket: rdb.ValuesBucket, callback: AsyncCallback<number>): void|向数据中插入一条数据。|
-|openFile?(uri: string, mode: string, callback: AsyncCallback<number>): void|打开一个文件。|
+|insert?(uri: string, valueBucket: rdb.ValuesBucket, callback: AsyncCallback\<number>): void|向数据中插入一条数据。|
+|openFile?(uri: string, mode: string, callback: AsyncCallback\<number>): void|打开一个文件。|
 |getFileTypes?(uri: string, mimeTypeFilter: string, callback: AsyncCallback<Array<string>>): void|获取文件的MIME类型。|
-|getType?(uri: string, callback: AsyncCallback<string>): void|获取URI指定数据相匹配的MIME类型。|
-|executeBatch?(ops: Array<DataAbilityOperation>, callback: AsyncCallback<Array<DataAbilityResult>>): void|批量操作数据库中的数据。|
-|call?(method: string, arg: string, extras: PacMap, callback: AsyncCallback<PacMap>): void|自定义方法。|
+|getType?(uri: string, callback: AsyncCallback\<string>): void|获取URI指定数据相匹配的MIME类型。|
+|executeBatch?(ops: Array\<DataAbilityOperation>, callback: AsyncCallback\<Array\<DataAbilityResult>>): void|批量操作数据库中的数据。|
+|call?(method: string, arg: string, extras: PacMap, callback: AsyncCallback\<PacMap>): void|自定义方法。|
 
 
 ## 开发步骤