diff --git a/distributeddatamgr/preferences/include/oh_preferences.h b/distributeddatamgr/preferences/include/oh_preferences.h
index 944fa9dffcdcd8024127548ed3994bf5f8de406d..837891ae77c612ee52a3301288e9d36e7aa26f88 100644
--- a/distributeddatamgr/preferences/include/oh_preferences.h
+++ b/distributeddatamgr/preferences/include/oh_preferences.h
@@ -263,6 +263,18 @@ int OH_Preferences_RegisterDataObserver(OH_Preferences *preference, void *contex
 int OH_Preferences_UnregisterDataObserver(OH_Preferences *preference, void *context,
     OH_PreferencesDataObserver observer, const char *keys[], uint32_t keyCount);
 
+/**
+ * @brief Check if a type is supported or not.
+ *
+ * @param type the storage type of {@Link Preferences_StorageType}.
+ * @param isSupported Pointer to the Boolean value obtained.
+ * @return Returns the status code of the execution.
+ *         {@link PREFERENCES_OK} indicates the operation is successful.
+ *         {@link PREFERENCES_ERROR_INVALID_PARAM} indicates invalid args are passed in.
+ * @since 16
+ */
+int OH_Preferences_IsStorageTypeSupported(Preferences_StorageType type, bool *isSupported);
+
 #ifdef __cplusplus
 };
 #endif
diff --git a/distributeddatamgr/preferences/include/oh_preferences_option.h b/distributeddatamgr/preferences/include/oh_preferences_option.h
index a8a25af9f55287456e3595803981a3c727390acf..82a6d7a310d0da483c974dd363d5ac04b4a70329 100644
--- a/distributeddatamgr/preferences/include/oh_preferences_option.h
+++ b/distributeddatamgr/preferences/include/oh_preferences_option.h
@@ -52,6 +52,18 @@ extern "C" {
  */
 typedef struct OH_PreferencesOption OH_PreferencesOption;
 
+/**
+ * @brief Enumerates the preferences storage types.
+ *
+ * @since 16
+ */
+typedef enum Preferences_StorageType {
+    /** XML storage*/
+    PREFERENCES_STORAGE_XML = 0,
+    /** CLKV storage */
+    PREFERENCES_STORAGE_CLKV
+} Preferences_StorageType;
+
 /**
  * @brief Creates an {@Link OH_PreferencesOption} instance.
  *
@@ -101,6 +113,19 @@ int OH_PreferencesOption_SetBundleName(OH_PreferencesOption *option, const char
  */
 int OH_PreferencesOption_SetDataGroupId(OH_PreferencesOption *option, const char *dataGroupId);
 
+/**
+ * @brief Sets the storage type in an {@Link OH_PreferencesOption} instance.
+ *
+ * @param option Represents a pointer to an {@link OH_PreferencesOption} instance.
+ * @param type Represents preferences storage type.
+ * @return Returns the status code of the execution.
+ *         {@link PREFERENCES_OK} success.
+ *         {@link PREFERENCES_ERROR_INVALID_PARAM} indicates invalid args are passed in.
+ * @see OH_PreferencesOption.
+ * @since 16
+ */
+int OH_PreferencesOption_SetStorageType(OH_PreferencesOption *option, Preferences_StorageType type);
+
 /**
  * @brief Destroys an {@Link OH_PreferencesOption} instance.
  *