diff --git a/services/source/inputinject/src/virtual_device.cpp b/services/source/inputinject/src/virtual_device.cpp
index b34f12ccde81dd110296859d2ee00ae03035ee48..3f7ad2a9381b05fc49d1b6dc5df466e437bd220d 100644
--- a/services/source/inputinject/src/virtual_device.cpp
+++ b/services/source/inputinject/src/virtual_device.cpp
@@ -16,6 +16,7 @@
 #include "virtual_device.h"
 
 #include <securec.h>
+#include <unistd.h>
 
 #include "constants_dinput.h"
 #include "dinput_log.h"
@@ -30,6 +31,7 @@ namespace {
     constexpr uint32_t ABS_MAX_POS = 2;
     constexpr uint32_t ABS_FUZZ_POS = 3;
     constexpr uint32_t ABS_FLAT_POS = 4;
+    constexpr uint32_t SLEEP_TIME_US = 10 * 1000;
 }
 VirtualDevice::VirtualDevice(const InputDevice &event) : deviceName_(event.name), busType_(event.bus),
     vendorId_(event.vendor), productId_(event.product), version_(event.version), classes_(event.classes)
@@ -163,7 +165,7 @@ bool VirtualDevice::SetUp(const InputDevice &inputDevice, const std::string &dev
         return false;
     }
     DHLOGI("create fd %{public}d", fd_);
-
+    usleep(SLEEP_TIME_US);
     char sysfsDeviceName[16] = {0};
     if (ioctl(fd_, UI_GET_SYSNAME(sizeof(sysfsDeviceName)), sysfsDeviceName) < 0) {
         DHLOGE("Unable to get input device name");
diff --git a/services/source/sourcemanager/src/distributed_input_source_manager.cpp b/services/source/sourcemanager/src/distributed_input_source_manager.cpp
index 8d7f5fa95a159d64716cd3be6b967a261046ec22..713cbfc49090635c1383ba80fab95cc9cb00f456 100644
--- a/services/source/sourcemanager/src/distributed_input_source_manager.cpp
+++ b/services/source/sourcemanager/src/distributed_input_source_manager.cpp
@@ -20,6 +20,7 @@
 #include "nlohmann/json.hpp"
 #include "system_ability_definition.h"
 #include "string_ex.h"
+#include <unistd.h>
 
 #include "distributed_hardware_fwk_kit.h"
 #include "ipublisher_listener.h"
@@ -44,6 +45,11 @@
 namespace OHOS {
 namespace DistributedHardware {
 namespace DistributedInput {
+namespace {
+    constexpr int32_t RAND_NUM_MIN = 0;
+    constexpr int32_t RAND_NUM_MAX = 20;
+    constexpr int32_t SLEEP_TIME_US = 1000;
+}
 REGISTER_SYSTEM_ABILITY_BY_ID(DistributedInputSourceManager, DISTRIBUTED_HARDWARE_INPUT_SOURCE_SA_ID, true);
 
 DistributedInputSourceManager::DistributedInputSourceManager(int32_t saId, bool runOnCreate)
@@ -265,6 +271,9 @@ int32_t DistributedInputSourceManager::RegisterDistributedHardware(const std::st
     }
     DHLOGI("RegisterDistributedHardware called, deviceId: %{public}s, dhId: %{public}s, parameters: %{public}s",
         GetAnonyString(devId).c_str(), GetAnonyString(dhId).c_str(), SetAnonyId(parameters).c_str());
+    int32_t randNumber = GenRandInt(RAND_NUM_MIN, RAND_NUM_MAX);
+    usleep(randNumber * SLEEP_TIME_US);
+
     std::lock_guard<std::mutex> lock(regDisHardwareMutex_);
     DInputClientRegistInfo info {devId, dhId, callback};
     regCallbacks_.push_back(info);
diff --git a/utils/include/dinput_utils_tool.h b/utils/include/dinput_utils_tool.h
index 8944eba995677779464037527c42e83d99672cc3..2b51b7231cd8cb1bc8a8304ba8311840ca831655 100644
--- a/utils/include/dinput_utils_tool.h
+++ b/utils/include/dinput_utils_tool.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022-2023 Huawei Device Co., Ltd.
+ * Copyright (c) 2022-2024 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -68,6 +68,7 @@ std::string GetString(const std::vector<std::string> &vec);
 int32_t GetRandomInt32();
 std::string JointDhIds(const std::vector<std::string> &dhids);
 std::vector<std::string> SplitDhIdString(const std::string &dhIdsString);
+int32_t GenRandInt(int32_t randMin, int32_t randMax);
 } // namespace DistributedInput
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/utils/src/dinput_utils_tool.cpp b/utils/src/dinput_utils_tool.cpp
index ee6a2b5bc2eebd88402f3ccfd82ba918fa5b47e1..06e3dc6b6222923b2555a68157bf6c384e88fac1 100644
--- a/utils/src/dinput_utils_tool.cpp
+++ b/utils/src/dinput_utils_tool.cpp
@@ -464,6 +464,14 @@ std::vector<std::string> SplitDhIdString(const std::string &dhIdsString)
     SplitStringToVector(dhIdsString, DHID_SPLIT, dhIdsVec);
     return dhIdsVec;
 }
+
+int32_t GenRandInt(int32_t randMin, int32_t randMax)
+{
+    std::random_device randDevice;
+    std::mt19937 genRand(randDevice());
+    std::uniform_int_distribution<int> disRand(randMin, randMax);
+    return disRand(genRand);
+}
 } // namespace DistributedInput
 } // namespace DistributedHardware
 } // namespace OHOS
\ No newline at end of file