Based on the data of A-share listed companies from 2010 to 2019, an empirical study was conducted by analyzing the chain transmission relationship between enterprise digital transformation, corporate social responsibility and firm value, and the moderation effect of industry competitive intensity and enterprise competitive position on the chain. The results show that the digital transformation of enterprise significantly promotes the performance of corporate social responsibility, and then improves the firm value. The degree of industry competition positively moderates the mediating effect of digital transformation of enterprise on firm value through corporate social responsibility, while the competitive position of enterprise negatively moderates the mediating effect of firm digital transformation on firm value through corporate social responsibility. The results have certain implications for promoting the development of enterprise digital transformation, improving corporate social responsibility and then enhancing enterprise value.