The purpose of this paper is to explore the impact of succession intention on family firm internationalization, and to examine the moderating effect of institutional environment in above relationship. First, we find that family ownership succession intention has a significantly negative effect on internationalization degree and speed, family management succession intention has a significantly positive effect on internationalization degree and speed, family ownership and management succession intention has a significantly positive effect on internationalization speed; Second, we also find that as institutional environment improves, the negative effects of family ownership succession intention on internationalization speed, the positive effects of family management succession intention on internationalization degree and speed, as well as the positive effect of family ownership and management succession intention on internationalization speed become weaker.