diff --git a/test/fuzztest/distributedinputkit_fuzzer/distributed_input_kit_fuzzer.cpp b/test/fuzztest/distributedinputkit_fuzzer/distributed_input_kit_fuzzer.cpp
index 1b7d578..fafd9e4 100644
--- a/test/fuzztest/distributedinputkit_fuzzer/distributed_input_kit_fuzzer.cpp
+++ b/test/fuzztest/distributedinputkit_fuzzer/distributed_input_kit_fuzzer.cpp
@@ -126,10 +126,11 @@ void StartRemoteInputFuzzTest(const uint8_t* data, size_t size)
     std::vector<std::string> dhIds= {};
     OHOS::sptr<TestStartDInputCallback> startCb = new (std::nothrow) TestStartDInputCallback();
     OHOS::sptr<TestStopDInputCallback> stopCb = new (std::nothrow) TestStopDInputCallback();
+    DistributedInput::DistributedInputKit::StartRemoteInput(sinkId, inputTypes, startCb);
     DistributedInput::DistributedInputKit::StartRemoteInput(srcId, sinkId, inputTypes, startCb);
-    DistributedInput::DistributedInputKit::StopRemoteInput(srcId, sinkId, inputTypes, stopCb);
     OHOS::sptr<TestIStartStopDInputsCallback> callback = new (std::nothrow) TestIStartStopDInputsCallback();
     DistributedInput::DistributedInputKit::StartRemoteInput(sinkId, dhIds, callback);
+    DistributedInput::DistributedInputKit::StartRemoteInput(srcId, sinkId, dhIds, callback);
 }
 
 void IsNeedFilterOutFuzzTest(const uint8_t* data, size_t size)
@@ -165,6 +166,7 @@ void StopRemoteInputFuzzTest(const uint8_t* data, size_t  size)
     DistributedInput::DistributedInputKit::StopRemoteInput(srcId, sinkId, inputTypes, stopCb);
     OHOS::sptr<TestIStartStopDInputsCallback> callback = new (std::nothrow) TestIStartStopDInputsCallback();
     DistributedInput::DistributedInputKit::StopRemoteInput(sinkId, dhIds, callback);
+    DistributedInput::DistributedInputKit::StopRemoteInput(srcId, sinkId, dhIds, callback);
 }
 
 void IsTouchEventNeedFilterOutFuzzTest(const uint8_t* data, size_t size)
diff --git a/test/fuzztest/distributedinputsinktransport_fuzzer/distributed_input_sink_transport_fuzzer.cpp b/test/fuzztest/distributedinputsinktransport_fuzzer/distributed_input_sink_transport_fuzzer.cpp
index 4382bb9..14658ab 100644
--- a/test/fuzztest/distributedinputsinktransport_fuzzer/distributed_input_sink_transport_fuzzer.cpp
+++ b/test/fuzztest/distributedinputsinktransport_fuzzer/distributed_input_sink_transport_fuzzer.cpp
@@ -64,6 +64,18 @@ void OnSessionOpenedFuzzTest(const uint8_t* data, size_t size)
     DistributedInput::DistributedInputSinkTransport::GetInstance().OnSessionOpened(sessionId, result);
     DistributedInput::DistributedInputSinkTransport::GetInstance().OnSessionClosed(sessionId);
 }
+
+void OnBytesReceivedFuzzTest(const uint8_t* data, size_t size)
+{
+    if ((data == nullptr) || (size <= 0)) {
+        return;
+    }
+
+    int32_t sessionId = *(reinterpret_cast<const int32_t*>(data));
+    const char *msg = reinterpret_cast<const char *>(data);
+    uint16_t dataLen = *(reinterpret_cast<const uint16_t*>(data));
+    DistributedInput::DistributedInputSinkTransport::GetInstance().OnBytesReceived(sessionId, msg, dataLen);
+}
 } // namespace DistributedHardware
 } // namespace OHOS
 
@@ -74,5 +86,6 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
     OHOS::DistributedHardware::RespPrepareRemoteInputFuzzTest(data, size);
     OHOS::DistributedHardware::RespStartRemoteInputFuzzTest(data, size);
     OHOS::DistributedHardware::OnSessionOpenedFuzzTest(data, size);
+    OHOS::DistributedHardware::OnBytesReceivedFuzzTest(data, size);
     return 0;
 }
\ No newline at end of file
diff --git a/test/fuzztest/distributedinputsourcetransport_fuzzer/distributed_input_source_transport_fuzzer.cpp b/test/fuzztest/distributedinputsourcetransport_fuzzer/distributed_input_source_transport_fuzzer.cpp
index e70694f..9df1f31 100644
--- a/test/fuzztest/distributedinputsourcetransport_fuzzer/distributed_input_source_transport_fuzzer.cpp
+++ b/test/fuzztest/distributedinputsourcetransport_fuzzer/distributed_input_source_transport_fuzzer.cpp
@@ -43,6 +43,8 @@ void OpenInputSoftbusFuzzTest(const uint8_t* data, size_t size)
     usleep(sleepTimeUs);
     DistributedInput::DistributedInputSourceTransport::GetInstance().OpenInputSoftbus(remoteDevId);
     DistributedInput::DistributedInputSourceTransport::GetInstance().CloseInputSoftbus(sessionId);
+    DistributedInput::DistributedInputSourceTransport::GetInstance().OpenInputSoftbusForRelay(remoteDevId);
+    DistributedInput::DistributedInputSourceTransport::GetInstance().CloseInputSoftbus(sessionId);
 }
 
 void OnSessionOpenedFuzzTest(const uint8_t* data, size_t size)
@@ -57,6 +59,18 @@ void OnSessionOpenedFuzzTest(const uint8_t* data, size_t size)
     DistributedInput::DistributedInputSourceTransport::GetInstance().OnSessionOpened(sessionId, result);
     DistributedInput::DistributedInputSourceTransport::GetInstance().OnSessionClosed(sessionId);
 }
+
+void OnBytesReceivedFuzzTest(const uint8_t* data, size_t size)
+{
+    if ((data == nullptr) || (size <= 0)) {
+        return;
+    }
+
+    int32_t sessionId = *(reinterpret_cast<const int32_t*>(data));
+    const char *msg = reinterpret_cast<const char *>(data);
+    uint16_t dataLen = *(reinterpret_cast<const uint16_t*>(data));
+    DistributedInput::DistributedInputSourceTransport::GetInstance().OnBytesReceived(sessionId, msg, dataLen);
+}
 } // namespace DistributedHardware
 } // namespace OHOS
 
@@ -67,5 +81,6 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
     /* Run your code on data */
     OHOS::DistributedHardware::OpenInputSoftbusFuzzTest(data, size);
     OHOS::DistributedHardware::OnSessionOpenedFuzzTest(data, size);
+    OHOS::DistributedHardware::OnBytesReceivedFuzzTest(data, size);
     return 0;
 }
\ No newline at end of file