diff --git a/frameworks/innerkits/file_access/include/file_access_helper.h b/frameworks/innerkits/file_access/include/file_access_helper.h
index df00dea5705432e9bbaba4cfce3ce1a8490b4160..a3a576292f8e9f049e0e03afad11a43f1b9b9bd0 100644
--- a/frameworks/innerkits/file_access/include/file_access_helper.h
+++ b/frameworks/innerkits/file_access/include/file_access_helper.h
@@ -23,9 +23,11 @@
 #include "file_ext_connection.h"
 #include "foundation/ability/ability_runtime/frameworks/kits/appkit/native/ability_runtime/context/context.h"
 #include "ifile_ext_base.h"
+#include "uri.h"
 #include "want.h"
 #include "hilog_wrapper.h"
 
+using Uri = OHOS::Uri;
 
 namespace OHOS {
 namespace FileAccessFwk {
@@ -37,6 +39,11 @@ public:
     static std::shared_ptr<FileAccessHelper> Creator(const std::shared_ptr<OHOS::AbilityRuntime::Context> &context,
         const AAFwk::Want &want);
 
+    int OpenFile(Uri &uri, int flags);
+    int CreateFile(Uri &parentUri, const std::string &displayName, Uri &newFileUri);
+    int Mkdir(Uri &parentUri, const std::string &displayName, Uri &newDirUri);
+    int Delete(Uri &selectFileUri);
+    int Rename(Uri &sourceFileUri, const std::string &displayName, Uri &newFileUri);
 private:
     FileAccessHelper(const std::shared_ptr<OHOS::AbilityRuntime::Context> &context, const AAFwk::Want &want,
         const sptr<IFileExtBase> &fileExtProxy);
@@ -46,6 +53,7 @@ private:
     sptr<IRemoteObject> token_ = {};
     AAFwk::Want want_ = {};
     sptr<IFileExtBase> fileExtProxy_ = nullptr;
+    bool isSystemCaller_ = false;
     sptr<IRemoteObject::DeathRecipient> callerDeathRecipient_ = nullptr;
     sptr<FileExtConnection> fileExtConnection_ = nullptr;
 };
diff --git a/frameworks/innerkits/file_access/src/file_access_helper.cpp b/frameworks/innerkits/file_access/src/file_access_helper.cpp
index ad9ac2937563fc42d8d1ad252f9316c31b3307e0..f27bf13800d7f6d284212678dfb7d920cfa74772 100644
--- a/frameworks/innerkits/file_access/src/file_access_helper.cpp
+++ b/frameworks/innerkits/file_access/src/file_access_helper.cpp
@@ -90,6 +90,146 @@ std::shared_ptr<FileAccessHelper> FileAccessHelper::Creator(
     return std::shared_ptr<FileAccessHelper>(ptrFileAccessHelper);
 }
 
+int FileAccessHelper::OpenFile(Uri &uri, int flags)
+{
+    HILOG_INFO("%{public}s begin.", __func__);
+
+    int fd = -1;
+
+    HILOG_INFO("FileAccessHelper::OpenFile before ConnectFileExtAbility.");
+    if (!fileExtConnection_->IsExtAbilityConnected()) {
+        fileExtConnection_->ConnectFileExtAbility(want_, token_);
+    }
+    fileExtProxy_ = fileExtConnection_->GetFileExtProxy();
+    HILOG_INFO("FileAccessHelper::OpenFile after ConnectFileExtAbility.");
+    if (isSystemCaller_ && fileExtProxy_) {
+        AddFileAccessDeathRecipient(fileExtProxy_->AsObject());
+    }
+
+    if (fileExtProxy_ == nullptr) {
+        HILOG_ERROR("%{public}s failed with invalid fileExtProxy_", __func__);
+        return fd;
+    }
+
+    HILOG_INFO("FileAccessHelper::OpenFile before fileExtProxy_->OpenFile.");
+    fd = fileExtProxy_->OpenFile(uri, flags);
+    HILOG_INFO("FileAccessHelper::OpenFile after fileExtProxy_->OpenFile.");
+    HILOG_INFO("%{public}s end.", __func__);
+    return fd;
+}
+
+int FileAccessHelper::CreateFile(Uri &parentUri, const std::string &displayName, Uri &newFileUri)
+{
+    HILOG_INFO("%{public}s begin.", __func__);
+
+    int index = -1;
+
+    HILOG_INFO("FileAccessHelper::CreateFile before ConnectDataShareExtAbility.");
+    if (!fileExtConnection_->IsExtAbilityConnected()) {
+        fileExtConnection_->ConnectFileExtAbility(want_, token_);
+    }
+    fileExtProxy_ = fileExtConnection_->GetFileExtProxy();
+    HILOG_INFO("FileAccessHelper::CreateFile after ConnectDataShareExtAbility.");
+    if (isSystemCaller_ && fileExtProxy_) {
+        AddFileAccessDeathRecipient(fileExtProxy_->AsObject());
+    }
+
+    if (fileExtProxy_ == nullptr) {
+        HILOG_ERROR("%{public}s failed with invalid fileExtProxy_", __func__);
+        return index;
+    }
+
+    HILOG_INFO("FileAccessHelper::CreateFile before fileExtProxy_->CreateFile.");
+    index = fileExtProxy_->CreateFile(parentUri, displayName, newFileUri);
+    HILOG_INFO("FileAccessHelper::CreateFile after fileExtProxy_->CreateFile.");
+    HILOG_INFO("%{public}s end.", __func__);
+    return index;
+}
+
+int FileAccessHelper::Mkdir(Uri &parentUri, const std::string &displayName, Uri &newDirUri)
+{
+    HILOG_INFO("%{public}s begin.", __func__);
+
+    int index = -1;
+
+    HILOG_INFO("FileAccessHelper::Mkdir before ConnectFileExtAbility.");
+    if (!fileExtConnection_->IsExtAbilityConnected()) {
+        fileExtConnection_->ConnectFileExtAbility(want_, token_);
+    }
+    fileExtProxy_ = fileExtConnection_->GetFileExtProxy();
+    HILOG_INFO("FileAccessHelper::Mkdir after ConnectFileExtAbility.");
+    if (isSystemCaller_ && fileExtProxy_) {
+        AddFileAccessDeathRecipient(fileExtProxy_->AsObject());
+    }
+
+    if (fileExtProxy_ == nullptr) {
+        HILOG_ERROR("%{public}s failed with invalid fileExtProxy_", __func__);
+        return index;
+    }
+
+    HILOG_INFO("FileAccessHelper::Mkdir before fileExtProxy_->Mkdir.");
+    index = fileExtProxy_->Mkdir(parentUri, displayName, newDirUri);
+    HILOG_INFO("FileAccessHelper::Mkdir after fileExtProxy_->Mkdir.");
+    HILOG_INFO("%{public}s end.", __func__);
+    return index;
+}
+
+int FileAccessHelper::Delete(Uri &selectFileUri)
+{
+    HILOG_INFO("%{public}s begin.", __func__);
+
+    int index = -1;
+
+    HILOG_INFO("FileAccessHelper::Delete before ConnectFileExtAbility.");
+    if (!fileExtConnection_->IsExtAbilityConnected()) {
+        fileExtConnection_->ConnectFileExtAbility(want_, token_);
+    }
+    fileExtProxy_ = fileExtConnection_->GetFileExtProxy();
+    HILOG_INFO("FileAccessHelper::Delete after ConnectFileExtAbility.");
+    if (isSystemCaller_ && fileExtProxy_) {
+        AddFileAccessDeathRecipient(fileExtProxy_->AsObject());
+    }
+
+    if (fileExtProxy_ == nullptr) {
+        HILOG_ERROR("%{public}s failed with invalid fileExtProxy_", __func__);
+        return index;
+    }
+
+    HILOG_INFO("FileAccessHelper::Delete before fileExtProxy_->Delete.");
+    index = fileExtProxy_->Delete(selectFileUri);
+    HILOG_INFO("FileAccessHelper::Delete after fileExtProxy_->Delete.");
+    HILOG_INFO("%{public}s end.", __func__);
+    return index;
+}
+
+int FileAccessHelper::Rename(Uri &sourceFileUri, const std::string &displayName, Uri &newFileUri)
+{
+    HILOG_INFO("%{public}s begin.", __func__);
+
+    int index = -1;
+
+    HILOG_INFO("FileAccessHelper::Rename before ConnectFileExtAbility.");
+    if (!fileExtConnection_->IsExtAbilityConnected()) {
+        fileExtConnection_->ConnectFileExtAbility(want_, token_);
+    }
+    fileExtProxy_ = fileExtConnection_->GetFileExtProxy();
+    HILOG_INFO("FileAccessHelper::Rename after ConnectFileExtAbility.");
+    if (isSystemCaller_ && fileExtProxy_) {
+        AddFileAccessDeathRecipient(fileExtProxy_->AsObject());
+    }
+
+    if (fileExtProxy_ == nullptr) {
+        HILOG_ERROR("%{public}s failed with invalid fileExtProxy_", __func__);
+        return index;
+    }
+
+    HILOG_INFO("FileAccessHelper::Rename before fileExtProxy_->Rename.");
+    index = fileExtProxy_->Rename(sourceFileUri, displayName, newFileUri);
+    HILOG_INFO("FileAccessHelper::Rename after fileExtProxy_->Rename.");
+    HILOG_INFO("%{public}s end.", __func__);
+    return index;
+}
+
 void FileAccessDeathRecipient::OnRemoteDied(const wptr<IRemoteObject> &remote)
 {
     HILOG_INFO("%{public}s begin.", __func__);
diff --git a/frameworks/innerkits/file_access/src/file_ext_connection.cpp b/frameworks/innerkits/file_access/src/file_ext_connection.cpp
index 915c58aab85aa498d5fb97e853d534f85f7edbc8..a1d52267f1dc34d73e5a192959693e1bf0e77827 100644
--- a/frameworks/innerkits/file_access/src/file_ext_connection.cpp
+++ b/frameworks/innerkits/file_access/src/file_ext_connection.cpp
@@ -17,6 +17,7 @@
 
 #include "ability_manager_client.h"
 #include "hilog_wrapper.h"
+#include "file_ext_proxy.h"
 
 namespace OHOS {
 namespace FileAccessFwk {
@@ -44,6 +45,7 @@ void FileExtConnection::OnAbilityConnectDone(
         HILOG_ERROR("%{public}s failed, remote is nullptr", __func__);
         return;
     }
+    fileExtProxy_ = iface_cast<FileExtProxy>(remoteObject);
     if (fileExtProxy_ == nullptr) {
         HILOG_ERROR("%{public}s failed, fileExtProxy_ is nullptr", __func__);
         return;