It is found that under the background of Chinese culture，social death events can be divided into four categories：just injury，violation of loyalty and filial piety，violation of sanctity and violation of norms. The degree of social exclusion caused by the four types of social death events was different among the public，and the degree of social exclusion caused by the violation of loyalty and filial piety was the strongest，followed by the injury of justice，defilement of sanctity and violation of norms. In the face of similar social death events，there are differences in the degree of exclusion among different genders，age groups and education levels. Social death events trigger strong moral emotional responses and further influence people’s social exclusion behavior. People’s social exclusion behavior was obviously affected by anger and disgust in the incidents of justice injury，loyalty and filial piety violation and sanctity defilement. In violation of norms，people’s social exclusion behavior is obviously influenced by contempt and disgust.