diff --git a/rtc_plugins.cpp b/rtc_plugins.cpp
index 92d4546..14c700a 100644
--- a/rtc_plugins.cpp
+++ b/rtc_plugins.cpp
@@ -43,6 +43,11 @@ int sendCustomAudioData(const int16_t destChannelIndex, py::object pyData, int32
         std::cout << "step 2" << std::endl;
         std::cout << "pyData ptr is:" << pyData.ptr() << std::endl;
         // 2. 检查是否是 numpy 数组
+        if (!PyObject_Check(pyData.ptr())) {
+            std::cerr << "ERROR: Not a valid Python object" << std::endl;
+            throw std::runtime_error("Invalid Python object");
+        }
+        std::cout << "step 2.1" << std::endl;
         if (!PyArray_Check(pyData.ptr())) {
             std::cout << "input is notnumpy" << std::endl;
             throw std::runtime_error("Input is not a numpy array");