diff --git a/interfaces/inner_api/file_access/include/file_access_ext_proxy.h b/interfaces/inner_api/file_access/include/file_access_ext_proxy.h
index 7b981fd39e4621a0de6b31985d2a9564e8c35573..e034de13c977007129f3da3b72652613c0a12696 100644
--- a/interfaces/inner_api/file_access/include/file_access_ext_proxy.h
+++ b/interfaces/inner_api/file_access/include/file_access_ext_proxy.h
@@ -48,8 +48,7 @@ public:
     virtual int Rename(const Uri &sourceFile, const std::string &displayName, Uri &newFile) override;
     virtual int ListFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount,
         const FileFilter &filter, std::vector<FileInfo> &fileInfoVec) override;
-    virtual int ScanFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount,
-        const FileFilter &filter, std::vector<FileInfo> &fileInfoVec) override;
+    virtual int ScanFile(const FileInfo &fileInfo, const int64_t offset, const FileFilter &filter, SharedMemoryInfo &memInfo) override;
     virtual int GetThumbnail(const Uri &uri, const ThumbnailSize &thumbnailSize,
         std::shared_ptr<PixelMap> &pixelMap) override;
     virtual int Query(const Uri &uri, std::vector<std::string> &columns, std::vector<std::string> &results) override;
diff --git a/interfaces/inner_api/file_access/include/file_access_ext_stub_impl.h b/interfaces/inner_api/file_access/include/file_access_ext_stub_impl.h
index 07db5e0b6889421845273502154b3416a2d774c9..0224dd0e13e3134a61595e4a8fed12160cf98cc8 100644
--- a/interfaces/inner_api/file_access/include/file_access_ext_stub_impl.h
+++ b/interfaces/inner_api/file_access/include/file_access_ext_stub_impl.h
@@ -46,8 +46,8 @@ public:
     int Rename(const Uri &sourceFile, const std::string &displayName, Uri &newFile) override;
     int ListFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount,
         const FileFilter &filter, std::vector<FileInfo> &fileInfoVec) override;
-    int ScanFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount,
-        const FileFilter &filter, std::vector<FileInfo> &fileInfoVec) override;
+    int ScanFile(const FileInfo &fileInfo, const int64_t offset, const FileFilter &filter,
+            SharedMemoryInfo &memInfo) override;
     int GetThumbnail(const Uri &uri, const ThumbnailSize &thumbnailSize, std::shared_ptr<PixelMap> &pixelMap) override;
     int Query(const Uri &uri, std::vector<std::string> &columns, std::vector<std::string> &results) override;
     int GetFileInfoFromUri(const Uri &selectFile, FileInfo &fileInfo) override;
diff --git a/interfaces/inner_api/file_access/include/file_access_helper.h b/interfaces/inner_api/file_access/include/file_access_helper.h
index 692fd4d88be51fdcd2d41df850ce016c3448db96..88c3ae2387e8204c1a56cbf561505a9fe3a47b3b 100644
--- a/interfaces/inner_api/file_access/include/file_access_helper.h
+++ b/interfaces/inner_api/file_access/include/file_access_helper.h
@@ -79,8 +79,7 @@ public:
     int Rename(Uri &sourceFile, const std::string &displayName, Uri &newFile);
     int ListFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount, const FileFilter &filter,
         std::vector<FileInfo> &fileInfoVec);
-    int ScanFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount, const FileFilter &filter,
-        std::vector<FileInfo> &fileInfoVec);
+    int ScanFile(const FileInfo &fileInfo, const int64_t offset, const FileFilter &filter, SharedMemoryInfo &memInfo);
     int GetThumbnail(Uri &uri, ThumbnailSize &thumbnailSize, std::shared_ptr<PixelMap> &pixelMap);
     int Query(Uri &uri, std::string &metaJson);
     int GetFileInfoFromUri(Uri &selectFile, FileInfo &fileInfo);
diff --git a/interfaces/inner_api/file_access/src/file_access_ext_proxy.cpp b/interfaces/inner_api/file_access/src/file_access_ext_proxy.cpp
index f701609be01d88ff071c0c29d7bcc6188c2223c6..ddb7e1afd0c6ecd674e105fb8d0938d5f15b513c 100644
--- a/interfaces/inner_api/file_access/src/file_access_ext_proxy.cpp
+++ b/interfaces/inner_api/file_access/src/file_access_ext_proxy.cpp
@@ -520,40 +520,32 @@ int FileAccessExtProxy::ScanFile(const FileInfo &fileInfo, const int64_t offset,
         return E_IPCS;
     }
 
-    if (!data.WriteParcelable(&fileInfo)) {
-        HILOG_ERROR("fail to WriteParcelable fileInfo");
-        return E_IPCS;
-    }
-
-    if (!data.WriteInt64(offset)) {
-        HILOG_ERROR("fail to WriteInt64 offset");
-        return E_IPCS;
-    }
-
-    if (!data.WriteInt64(maxCount)) {
-        HILOG_ERROR("fail to WriteInt64 maxCount");
-        return E_IPCS;
-    }
-
-    if (!data.WriteParcelable(&filter)) {
-        HILOG_ERROR("fail to WriteParcelable filter");
-        return E_IPCS;
+    int ret = WriteFileFilterFuncArguments(data, std::make_tuple(&fileInfo, offset, &filter, &memInfo));
+    if (ret != ERR_OK) {
+        return ret;
     }
 
     MessageParcel reply;
     MessageOption option;
-    int err = Remote()->SendRequest(CMD_SCAN_FILE, data, reply, option);
-    if (err != ERR_OK) {
+    ret = Remote()->SendRequest(CMD_SCAN_FILE, data, reply, option);
+    if (ret != ERR_OK) {
         HILOG_ERROR("fail to SendRequest. err: %{public}d", err);
-        return err;
+        return ret;
     }
-
-    err = GetListFileResult(reply, fileInfoVec);
-    if (err != ERR_OK) {
-        HILOG_ERROR("fail to GetListFileResult. err: %{public}d", err);
-        return err;
+    if (!reply.ReadInt32(ret)) {
+        HILOG_ERROR("fail to ReadInt32 ret");
+        return E_IPCS;
+    }
+    if (ret != ERR_OK) {
+        HILOG_ERROR("ScanFile operation failed ret : %{public}d", ret);
+        return ret;
     }
 
+    ret = ReadFileFilterResults(reply, memInfo);
+    if (ret != ERR_OK) {
+        HILOG_ERROR("fail to read server return results. ret: %{public}d", err);
+        return ret;
+    }
     return ERR_OK;
 }
 
@@ -950,4 +942,4 @@ int FileAccessExtProxy::StopWatcher(const Uri &uri, bool isUnregisterAll)
     return ERR_OK;
 }
 } // namespace FileAccessFwk
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp b/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp
index 18a286639a099a96dc7a07f163aed1e04576815e..639fbb6a0635af005d0d3782c0b62dff3313cbbc 100644
--- a/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp
+++ b/interfaces/inner_api/file_access/src/file_access_ext_stub.cpp
@@ -421,51 +421,30 @@ ErrCode FileAccessExtStub::CmdScanFile(MessageParcel &data, MessageParcel &reply
 {
     UserAccessTracer trace;
     trace.Start("CmdScanFile");
-    std::shared_ptr<FileInfo> fileInfo(data.ReadParcelable<FileInfo>());
-    if (fileInfo == nullptr) {
-        HILOG_ERROR("Parameter ScanFile fail to ReadParcelable fileInfo");
-        return E_IPCS;
-    }
-
+    int ret = E_IPCS;
+    std::shared_ptr<FileInfo> fileInfo = nullptr;
     int64_t offset = 0;
-    if (!data.ReadInt64(offset)) {
-        HILOG_ERROR("parameter ScanFile offset is invalid");
-        return E_IPCS;
-    }
+    std::shared_ptr<FileFilter> filter = nullptr;
+    std::shared_ptr<SharedMemoryInfo> memInfo = nullptr;
 
-    int64_t maxCount = 0;
-    if (!data.ReadInt64(maxCount)) {
-        HILOG_ERROR("parameter ScanFile maxCount is invalid");
-        return E_IPCS;
+    std::tie(ret, fileInfo, offset, filter, memInfo) = ReadFileFilterFuncArguments(data);
+    if (ret != ERR_OK) {
+        return ret;
     }
-
-    std::shared_ptr<FileFilter> filter(data.ReadParcelable<FileFilter>());
-    if (filter == nullptr) {
-        HILOG_ERROR("parameter ScanFile FileFilter is invalid");
-        return E_IPCS;
+    ret = SharedMemoryOperation::MapSharedMemory(*memInfo);
+    if (ret != ERR_OK) {
+        return ret;
     }
 
-    std::vector<FileInfo> fileInfoVec;
-    int ret = ScanFile(*fileInfo, offset, maxCount, *filter, fileInfoVec);
+    ret = ScanFile(*fileInfo, offset, *filter, *memInfo);
     if (!reply.WriteInt32(ret)) {
         HILOG_ERROR("Parameter ScanFile fail to WriteInt32 ret");
         return E_IPCS;
     }
 
-    int64_t count {fileInfoVec.size()};
-    if (!reply.WriteInt64(count)) {
-        HILOG_ERROR("Parameter ScanFile fail to WriteInt64 count");
-        return E_IPCS;
-    }
-
-    for (const auto &fileInfo : fileInfoVec) {
-        if (!reply.WriteParcelable(&fileInfo)) {
-            HILOG_ERROR("parameter ScanFile fail to WriteParcelable fileInfoVec");
-            return E_IPCS;
-        }
-    }
-
-    return ERR_OK;
+    ret = WriteFileFilterResults(reply, *memInfo);
+    SharedMemoryOperation::DestroySharedMemory(*memInfo);
+    return ret;
 }
 
 ErrCode FileAccessExtStub::CmdGetRoots(MessageParcel &data, MessageParcel &reply)
@@ -717,4 +696,4 @@ bool FileAccessExtStub::CheckCallingPermission(const std::string &permission)
     return true;
 }
 } // namespace FileAccessFwk
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/interfaces/inner_api/file_access/src/file_access_ext_stub_impl.cpp b/interfaces/inner_api/file_access/src/file_access_ext_stub_impl.cpp
index e389bbcb5dc268cd9ffb1b8b5553a9d2e73a8ec2..eee6df2bf98c26f1d8d9e711bd8d7365fab0aefc 100644
--- a/interfaces/inner_api/file_access/src/file_access_ext_stub_impl.cpp
+++ b/interfaces/inner_api/file_access/src/file_access_ext_stub_impl.cpp
@@ -133,8 +133,8 @@ int FileAccessExtStubImpl::ListFile(const FileInfo &fileInfo, const int64_t offs
     return ret;
 }
 
-int FileAccessExtStubImpl::ScanFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount,
-    const FileFilter &filter, std::vector<FileInfo> &fileInfoVec)
+int FileAccessExtStubImpl::ScanFile(const FileInfo &fileInfo, const int64_t offset, const FileFilter &filter,
+    SharedMemoryInfo &memInfo)
 {
     UserAccessTracer trace;
     trace.Start("ScanFile");
@@ -143,7 +143,29 @@ int FileAccessExtStubImpl::ScanFile(const FileInfo &fileInfo, const int64_t offs
         return E_IPCS;
     }
 
-    int ret = extension_->ScanFile(fileInfo, offset, maxCount, filter, fileInfoVec);
+    std::vector<FileInfo> fileInfoVec;
+    int ret = ERR_OK;
+    int64_t currentOffset = offset;
+    memInfo.isOver = false;
+    while (true) {
+        fileInfoVec.clear();
+        ret = extension_->ScanFile(fileInfo, offset, maxCount, filter, fileInfoVec);
+        if (ret != ERR_OK) {
+            HILOG_ERROR("Extension ability ScanFile error");
+            break;
+        }
+
+        uint32_t currentWriteCounts = SharedMemoryOperation::WriteFileInfos(fileInfoVec, memInfo);
+        if (currentWriteCounts < fileInfoVec.size()) {
+            break;
+        }
+        if (fileInfoVec.empty() || maxCounts > fileInfoVec.size()) {
+            memInfo.isOver = true;
+            break;
+        }
+        currentOffset += fileInfoVec.size();
+    }
+
     return ret;
 }
 
@@ -258,4 +280,4 @@ int FileAccessExtStubImpl::StopWatcher(const Uri &uri, bool isUnregisterAll)
     return ret;
 }
 } // namespace FileAccessFwk
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/interfaces/inner_api/file_access/src/file_access_helper.cpp b/interfaces/inner_api/file_access/src/file_access_helper.cpp
index ed81bf4cd59ccc7d8fd720057dc2834c6230d438..3cc11685f8884faa0f62c6f0160755d5dd7db588 100644
--- a/interfaces/inner_api/file_access/src/file_access_helper.cpp
+++ b/interfaces/inner_api/file_access/src/file_access_helper.cpp
@@ -771,8 +771,8 @@ int FileAccessHelper::ListFile(const FileInfo &fileInfo, const int64_t offset, c
     return ERR_OK;
 }
 
-int FileAccessHelper::ScanFile(const FileInfo &fileInfo, const int64_t offset, const int64_t maxCount,
-    const FileFilter &filter, std::vector<FileInfo> &fileInfoVec)
+int FileAccessHelper::ScanFile(const FileInfo &fileInfo, const int64_t offset, const FileFilter &filter,
+    SharedMemoryInfo &memInfo)
 {
     UserAccessTracer trace;
     trace.Start("ScanFile");
@@ -793,7 +793,8 @@ int FileAccessHelper::ScanFile(const FileInfo &fileInfo, const int64_t offset, c
         return E_IPCS;
     }
 
-    int ret = fileExtProxy->ScanFile(fileInfo, offset, maxCount, filter, fileInfoVec);
+    memInfo.Clear();
+    int ret = fileExtProxy->ScanFile(fileInfo, offset, filter, memInfo);
     if (ret != ERR_OK) {
         HILOG_ERROR("ScanFile get result error, code:%{public}d", ret);
         return ret;