diff --git a/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dscreen_input/dscreen_input_plugin.cpp b/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dscreen_input/dscreen_input_plugin.cpp
index bff09995382e9ae14d749cb083cfdef368c43e85..81b579e525a5eaacbe6aa83309bfe5d854e0104b 100644
--- a/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dscreen_input/dscreen_input_plugin.cpp
+++ b/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dscreen_input/dscreen_input_plugin.cpp
@@ -127,6 +127,10 @@ Status DscreenInputPlugin::PushData(const std::string& inPort, std::shared_ptr<B
 
     ++frameNumber_;
     bufferMeta->SetMeta(Tag::USER_FRAME_NUMBER, frameNumber_.load());
+    if (buffer->GetMemory() == nullptr) {
+        AVTRANS_LOGE("bufferMemory is nullptr.");
+        return Status::ERROR_NULL_POINTER;
+    }
     AVTRANS_LOGI("Push video buffer pts: %{public}ld, bufferLen: %{public}d, frameNumber: %{public}u.",
         buffer->pts, buffer->GetMemory()->GetSize(),
         Plugin::AnyCast<uint32_t>(bufferMeta->GetMeta(Tag::USER_FRAME_NUMBER)));
diff --git a/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dsoftbus_input/dsoftbus_input_plugin.cpp b/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dsoftbus_input/dsoftbus_input_plugin.cpp
index e7f03ef1a28c41b49bac9a77c0ea9d4089702141..dd79765d8e957e1c94b260193154a51af486457c 100644
--- a/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dsoftbus_input/dsoftbus_input_plugin.cpp
+++ b/av_transport/av_trans_engine/plugin/plugins/av_trans_input/dsoftbus_input/dsoftbus_input_plugin.cpp
@@ -288,7 +288,10 @@ std::shared_ptr<Buffer> DsoftbusInputPlugin::CreateBuffer(uint32_t metaType,
     }
     auto buffer = Buffer::CreateDefaultBuffer(static_cast<BufferMetaType>(metaType), data->bufLen);
     auto bufData = buffer->GetMemory();
-
+    if (bufData == nullptr) {
+        AVTRANS_LOGE("bufferData is nullptr.");
+        return nullptr;
+    }
     auto writeSize = bufData->Write(reinterpret_cast<const uint8_t *>(data->buf), data->bufLen, 0);
     if (static_cast<ssize_t>(writeSize) != data->bufLen) {
         AVTRANS_LOGE("write buffer data failed.");
diff --git a/av_transport/av_trans_engine/plugin/plugins/av_trans_output/dsoftbus_output/dsoftbus_output_plugin.cpp b/av_transport/av_trans_engine/plugin/plugins/av_trans_output/dsoftbus_output/dsoftbus_output_plugin.cpp
index 7fc142cfd230198c789531b34c019a452ef2b550..996b1800d77feefa221bbfb2f893297e72093a3a 100644
--- a/av_transport/av_trans_engine/plugin/plugins/av_trans_output/dsoftbus_output/dsoftbus_output_plugin.cpp
+++ b/av_transport/av_trans_engine/plugin/plugins/av_trans_output/dsoftbus_output/dsoftbus_output_plugin.cpp
@@ -260,8 +260,12 @@ Status DsoftbusOutputPlugin::PushData(const std::string &inPort, std::shared_ptr
     }
     if (GetDumpFlag() == true) {
         auto bufferData = buffer->GetMemory();
-        DumpBufferToFile(SCREEN_FILE_NAME_AFTERCODING,
-            const_cast<uint8_t*>(bufferData->GetReadOnlyData()), bufferData->GetSize());
+        if (bufferData != nullptr) {
+            DumpBufferToFile(SCREEN_FILE_NAME_AFTERCODING,
+                const_cast<uint8_t*>(bufferData->GetReadOnlyData()), bufferData->GetSize());
+        } else {
+            AVTRANS_LOGE("bufferData is null.");
+        }
     } else {
         AVTRANS_LOGD("DumpFlag = false.");
     }