Taking Chinese A-share listed companies from 2005 to 2020 as samples, this paper studies the existence, learning mechanism, and economic consequences of trade credit peer effect from the perspective of independent director network. The study finds that the company's trade credit in the same independent director network has a significant peer effect, and the company's trade credit will be significantly positively affected by the independent director's peer companies. The learning effect based on the network information transmission of independent directors is an important mechanism to produce the peer effect of independent director network in trade credit, which is specifically manifested in the fact that companies with low market share, long peer duration, high degree of centrality and high uncertainty of external environment learn more from the independent director network peer companies. Further research shows that peer effect of independent director network in trade credit is helpful to enhance the company value. The conclusion not only extends the theoretical research on the influencing factors of trade credit, but also shows that interlocking independent directors can play a role of “walk the talk” in corporate decision-making.