Based on the sample of A-share listed companies in Shanghai and Shenzhen from 2009 to 2017,this paper compares the differences in environmental responsibilities performed by family companies and non-family companies, and studies the impact of the three dimensions of family involvement on the environmental responsibility behavior of family companies. The results of this study show that family companies perform less environmental responsibilities than non-family companies.In family companies, an increase in the proportion of family ownership will significantly reduce the level of environmental responsibilities of family companies, and family members serving as chairman of the board of directors will symbolically disclose more environmental responsibilities information. Generally speaking, there is an inverted U-shaped relationship between family involvement time and environmental responsibility.Further research shows that family firms will selectively perform environmental responsibilities to maintain family reputation while reducing economic loss. The impact of controlling family involvement on environmental responsibility differs between entrepreneurial and non-entrepreneurial family businesses. In family firms with mandatory disclosure, the negative impact of ownership on environmental responsibility will be weakened.