diff --git a/interfaces/inner_kits/native_cpp/include/dm_device_info.h b/interfaces/inner_kits/native_cpp/include/dm_device_info.h
index 542ee8f14ee07733bcadf005ab6d440c577a29e4..93a39b4a3b07f3a9a63cba6d180740ec3b92bcd5 100644
--- a/interfaces/inner_kits/native_cpp/include/dm_device_info.h
+++ b/interfaces/inner_kits/native_cpp/include/dm_device_info.h
@@ -457,13 +457,13 @@ struct DmDeviceInfoExt : public Parcelable
     DmDeviceInfoExt(const DmDeviceInfo &devInfo)
     {
         strncpy(deviceId, devInfo.deviceId, DM_MAX_DEVICE_ID_LEN - 1);
-        deviceId[DM_MAX_DEVICE_ID_LEN - 1] = '\0'; // 纭繚瀛楃涓蹭互 '\0' 缁撳熬
+        deviceId[DM_MAX_DEVICE_ID_LEN - 1] = '\0';
 
         strncpy(deviceName, devInfo.deviceName, DM_MAX_DEVICE_NAME_LEN - 1);
-        deviceName[DM_MAX_DEVICE_NAME_LEN - 1] = '\0'; // 纭繚瀛楃涓蹭互 '\0' 缁撳熬
+        deviceName[DM_MAX_DEVICE_NAME_LEN - 1] = '\0';
 
         strncpy(networkId, devInfo.networkId, DM_MAX_DEVICE_ID_LEN - 1);
-        networkId[DM_MAX_DEVICE_ID_LEN - 1] = '\0'; // 纭繚瀛楃涓蹭互 '\0' 缁撳熬
+        networkId[DM_MAX_DEVICE_ID_LEN - 1] = '\0';
 
         deviceTypeId = devInfo.deviceTypeId;
         range = devInfo.range;
@@ -498,39 +498,6 @@ struct DmDeviceInfoExt : public Parcelable
 
     static DmDeviceInfoExt *Unmarshalling(Parcel &parcel);
 };
-
-struct PeerTargetIdExt : public PeerTargetId, public Parcelable {
-
-    using PeerTargetId::PeerTargetId;
-
-    PeerTargetIdExt(const PeerTargetId& peerTargetId) : PeerTargetId(peerTargetId) {}
-
-    virtual bool Marshalling(Parcel &parcel) const override;
-
-    static PeerTargetIdExt *Unmarshalling(Parcel &parcel);
-};
-
-struct DmAccessCallerExt : public DmAccessCaller, public Parcelable {
-
-    using DmAccessCaller::DmAccessCaller;
-
-    DmAccessCallerExt(const DmAccessCaller& dmAccessCaller) : DmAccessCaller(dmAccessCaller) {}
-
-    virtual bool Marshalling(Parcel &parcel) const override;
-
-    static DmAccessCallerExt *Unmarshalling(Parcel &parcel);
-};
-
-struct DmAccessCalleeExt : public DmAccessCallee, public Parcelable {
-
-    using DmAccessCallee::DmAccessCallee;
-
-    DmAccessCalleeExt(const DmAccessCallee& dmAccessCallee) : DmAccessCallee(dmAccessCallee) {}
-
-    virtual bool Marshalling(Parcel &parcel) const override;
-
-    static DmAccessCalleeExt *Unmarshalling(Parcel &parcel);
-};
 } // namespace DistributedHardware
 } // namespace OHOS
 #endif // OHOS_DM_DEVICE_INFO_H
\ No newline at end of file
diff --git a/interfaces/inner_kits/native_cpp/src/dm_device_info.cpp b/interfaces/inner_kits/native_cpp/src/dm_device_info.cpp
index a6f0a4e9b9a3b3af6cb3a1e44726f91021a2e342..45f416c6474f0c198294598dc965f5b2f16bc6a8 100644
--- a/interfaces/inner_kits/native_cpp/src/dm_device_info.cpp
+++ b/interfaces/inner_kits/native_cpp/src/dm_device_info.cpp
@@ -77,86 +77,5 @@ DmDeviceInfoExt *DmDeviceInfoExt::Unmarshalling(Parcel &parcel)
     return deviceInfoExt;
 }
 
-bool PeerTargetIdExt::Marshalling(Parcel &parcel) const
-{
-    bool bRet = true;
-    bRet = (bRet && parcel.WriteString(deviceId));
-    bRet = (bRet && parcel.WriteString(brMac));
-    bRet = (bRet && parcel.WriteString(bleMac));
-    bRet = (bRet && parcel.WriteString(wifiIp));
-    bRet = (bRet && parcel.WriteUint16(wifiPort));
-    return bRet;
-}
-
-PeerTargetIdExt *PeerTargetIdExt::Unmarshalling(Parcel &parcel)
-{
-    PeerTargetIdExt *targetIdExt = new (std::nothrow) PeerTargetIdExt();
-    if (targetIdExt == nullptr) {
-        LOGE("Create PeerTargetIdExt failed");
-        return nullptr;
-    }
-    targetIdExt->deviceId = parcel.ReadString();
-    targetIdExt->brMac = parcel.ReadString();
-    targetIdExt->bleMac = parcel.ReadString();
-    targetIdExt->wifiIp = parcel.ReadString();
-    targetIdExt->wifiPort = parcel.ReadUint16();
-    return targetIdExt;
-}
-
-bool DmAccessCallerExt::Marshalling(Parcel &parcel) const
-{
-    bool bRet = true;
-    bRet = (bRet && parcel.WriteString(accountId));
-    bRet = (bRet && parcel.WriteString(pkgName));
-    bRet = (bRet && parcel.WriteString(networkId));
-    bRet = (bRet && parcel.WriteInt32(userId));
-    bRet = (bRet && parcel.WriteUint64(tokenId));
-    bRet = (bRet && parcel.WriteString(extra));
-    return bRet;
-}
-
-DmAccessCallerExt *DmAccessCallerExt::Unmarshalling(Parcel &parcel)
-{
-    DmAccessCallerExt *callerExt = new (std::nothrow) DmAccessCallerExt();
-    if (callerExt == nullptr) {
-        LOGE("Create DmAccessCallerExt failed");
-        return nullptr;
-    }
-    callerExt->accountId = parcel.ReadString();
-    callerExt->pkgName = parcel.ReadString();
-    callerExt->networkId = parcel.ReadString();
-    callerExt->userId = parcel.ReadInt32();
-    callerExt->tokenId = parcel.ReadUint64();
-    callerExt->extra = parcel.ReadString();
-    return callerExt;
-}
-
-bool DmAccessCalleeExt::Marshalling(Parcel &parcel) const
-{
-    bool bRet = true;
-    bRet = (bRet && parcel.WriteString(accountId));
-    bRet = (bRet && parcel.WriteString(networkId));
-    bRet = (bRet && parcel.WriteString(peerId));
-    bRet = (bRet && parcel.WriteInt32(userId));
-    bRet = (bRet && parcel.WriteString(extra));
-    return bRet;
-}
-
-DmAccessCalleeExt *DmAccessCalleeExt::Unmarshalling(Parcel &parcel)
-{
-    DmAccessCalleeExt *calleeExt = new (std::nothrow) DmAccessCalleeExt();
-    if (calleeExt == nullptr) {
-        LOGE("Create DmAccessCallerExt failed");
-        return nullptr;
-    }
-    calleeExt->accountId = parcel.ReadString();
-    calleeExt->networkId = parcel.ReadString();
-    calleeExt->peerId = parcel.ReadString();
-    calleeExt->userId = parcel.ReadInt32();
-    calleeExt->extra = parcel.ReadString();
-    
-    return calleeExt;
-}
-
 } // namespace DistributedHardware
 } // namespace OHOS
\ No newline at end of file