diff --git a/global/resource_management/include/rawfile/raw_file.h b/global/resource_management/include/rawfile/raw_file.h
index 0fb7627fe8b506fff4415cf7596797ee922f0ccd..85eb3c545071b0a9d6141b2dd2a568850f39e9f3 100644
--- a/global/resource_management/include/rawfile/raw_file.h
+++ b/global/resource_management/include/rawfile/raw_file.h
@@ -120,7 +120,8 @@ typedef struct {
  * @param rawFile Indicates the pointer to {@link RawFile}.
  * @param buf Indicates the pointer to the buffer for receiving the data read.
  * @param length Indicates the number of bytes to read.
- * @return Returns the number of bytes read if any; returns <b>0</b> if the number reaches the end of file (EOF).
+ * @return Returns the number of bytes read if any;
+ *         if the number reaches the end of file (EOF) or rawFile is nullptr also returns <b>0</b>
  * @since 8
  * @version 1.0
  */
@@ -146,7 +147,7 @@ int OH_ResourceManager_SeekRawFile(const RawFile *rawFile, long offset, int when
  * @brief Obtains the raw file length represented by an long.
  *
  * @param rawFile Indicates the pointer to {@link RawFile}.
- * @return Returns the total length of the raw file.
+ * @return Returns the total length of the raw file. If rawFile is nullptr also returns 0.
  * @since 8
  * @version 1.0
  */
@@ -156,7 +157,7 @@ long OH_ResourceManager_GetRawFileSize(RawFile *rawFile);
  * @brief Obtains the remaining raw file length represented by an long.
  *
  * @param rawFile Indicates the pointer to {@link RawFile}.
- * @return Returns the remaining length of the raw file.
+ * @return Returns the remaining length of the raw file. If rawFile is nullptr also returns 0.
  * @since 11
  * @version 1.0
  */
@@ -180,7 +181,7 @@ void OH_ResourceManager_CloseRawFile(RawFile *rawFile);
  * The current offset of a raw file.
  *
  * @param rawFile Indicates the pointer to {@link RawFile}.
- * @return Returns the current offset of a raw file.
+ * @return Returns the current offset of a raw file. If rawFile is nullptr also returns 0.
  * @since 8
  * @version 1.0
  */
@@ -219,7 +220,8 @@ bool OH_ResourceManager_ReleaseRawFileDescriptor(const RawFileDescriptor &descri
  * @param rawFile Indicates the pointer to {@link RawFile64}.
  * @param buf Indicates the pointer to the buffer for receiving the data read.
  * @param length Indicates the number of bytes to read.
- * @return Returns the number of bytes read if any; returns <b>0</b> if the number reaches the end of file (EOF).
+ * @return Returns the number of bytes read if any;
+ *         returns <b>0</b> if the number reaches the end of file (EOF). or rawFile is nullptr also returns 0
  * @since 11
  * @version 1.0
  */
@@ -245,7 +247,7 @@ int OH_ResourceManager_SeekRawFile64(const RawFile64 *rawFile, int64_t offset, i
  * @brief Obtains the raw file length represented by an int64_t.
  *
  * @param rawFile Indicates the pointer to {@link RawFile64}.
- * @return Returns the total length of the raw file.
+ * @return Returns the total length of the raw file. If rawFile is nullptr also returns 0.
  * @since 11
  * @version 1.0
  */
@@ -255,7 +257,7 @@ int64_t OH_ResourceManager_GetRawFileSize64(RawFile64 *rawFile);
  * @brief Obtains the remaining raw file length represented by an int64_t.
  *
  * @param rawFile Indicates the pointer to {@link RawFile64}.
- * @return Returns the remaining length of the raw file.
+ * @return Returns the remaining length of the raw file. If rawFile is nullptr also returns 0.
  * @since 11
  * @version 1.0
  */
@@ -279,7 +281,7 @@ void OH_ResourceManager_CloseRawFile64(RawFile64 *rawFile);
  * The current offset of a raw file.
  *
  * @param rawFile Indicates the pointer to {@link RawFile64}.
- * @return Returns the current offset of a raw file.
+ * @return Returns the current offset of a raw file. If rawFile is nullptr also returns 0.
  * @since 11
  * @version 1.0
  */
diff --git a/global/resource_management/include/rawfile/raw_file_manager.h b/global/resource_management/include/rawfile/raw_file_manager.h
index ca3fabae47ed4536a565057cbf303e007117313a..42a8ff9c3bbaaf6bd08b9f2f6eeea179ae817e3b 100644
--- a/global/resource_management/include/rawfile/raw_file_manager.h
+++ b/global/resource_management/include/rawfile/raw_file_manager.h
@@ -66,7 +66,7 @@ typedef struct NativeResourceManager NativeResourceManager;
  *
  * @param env Indicates the pointer to the JavaScipt Native Interface (napi) environment.
  * @param jsResMgr Indicates the JavaScipt resource manager.
- * @return Returns the pointer to {@link NativeResourceManager}.
+ * @return Returns the pointer to {@link NativeResourceManager}. If failed returns nullptr.
  * @since 8
  * @version 1.0
  */
@@ -92,8 +92,8 @@ void OH_ResourceManager_ReleaseNativeResourceManager(NativeResourceManager *resM
  * {@link OH_ResourceManager_InitNativeResourceManager}.
  * @param dirName Indicates the name of the raw file directory to open. You can pass an empty string to open the
  * top-level raw file directory.
- * @return Returns the pointer to {@link RawDir}. After you finish using the pointer, call
- * {@link OH_ResourceManager_CloseRawDir} to release it.
+ * @return Returns the pointer to {@link RawDir}. If failed or mgr is nullptr also returns nullptr.
+ *         After you finish using the pointer, call {@link OH_ResourceManager_CloseRawDir} to release it.
  * @see OH_ResourceManager_InitNativeResourceManager
  * @see OH_ResourceManager_CloseRawDir
  * @since 8
@@ -109,8 +109,8 @@ RawDir *OH_ResourceManager_OpenRawDir(const NativeResourceManager *mgr, const ch
  * @param mgr Indicates the pointer to {@link NativeResourceManager} obtained by calling
  * {@link OH_ResourceManager_InitNativeResourceManager}.
  * @param fileName Indicates the file path relative to the top-level raw file directory.
- * @return Returns the pointer to {@link RawFile}. After you finish using the pointer, call
- * {@link OH_ResourceManager_CloseRawFile} to release it.
+ * @return Returns the pointer to {@link RawFile}. If failed or mgr and fileName is nullptr also returns nullptr.
+ * After you finish using the pointer, call {@link OH_ResourceManager_CloseRawFile} to release it.
  * @see OH_ResourceManager_InitNativeResourceManager
  * @see OH_ResourceManager_CloseRawFile
  * @since 8
@@ -126,8 +126,8 @@ RawFile *OH_ResourceManager_OpenRawFile(const NativeResourceManager *mgr, const
  * @param mgr Indicates the pointer to {@link NativeResourceManager} obtained by calling
  * {@link OH_ResourceManager_InitNativeResourceManager}.
  * @param fileName Indicates the file path relative to the top-level raw file directory.
- * @return Returns the pointer to {@link RawFile64}. After you finish using the pointer, call
- * {@link OH_ResourceManager_CloseRawFile64} to release it.
+ * @return Returns the pointer to {@link RawFile64}. If failed or mgr and fileName is nullptr also returns nullptr.
+ * After you finish using the pointer, call {@link OH_ResourceManager_CloseRawFile64} to release it.
  * @see OH_ResourceManager_InitNativeResourceManager
  * @see OH_ResourceManager_CloseRawFile64
  * @since 11