diff --git a/rtc_plugins.cpp b/rtc_plugins.cpp
index a91b8e0..cab8994 100644
--- a/rtc_plugins.cpp
+++ b/rtc_plugins.cpp
@@ -63,12 +63,11 @@ int sendCustomAudioData(const int16_t destChannelIndex, py::object pD, int32_t s
 
         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;
+        if (!pyData.ptr() || !Py_IsInitialized() || !PyObject_TypeCheck(pyData.ptr(), &PyBaseObject_Type)) {
             throw std::runtime_error("Invalid Python object");
         }
         std::cout << "step 2" << std::endl;
+        // 2. 检查是否是 numpy 数组
         if (!PyArray_Check(pyData.ptr())) {
             std::cout << "input is notnumpy" << std::endl;
             throw std::runtime_error("Input is not a numpy array");