Focusing on the exchange relationship norm when the business ends, this paper explore the firm's decision in response to the environmental uncertainty under the conditions of ‘information dispersing of transaction results among firms’ and ‘ending the transaction dependence’, the authors collect 312 surveys from 3 provinces and use MANOVA and GLM to test the proposed hypotheses. The empirical results show that exchange network characters influence the independence and information transmission hence makes significantly effect on firm's exit strategy. It results indicate that the influence of environmental uncertainty on solidarity norm is negatively mediated by the exchange network density and the influence of environmental uncertainty on the information-sharing norm as well as the flexibility norm are negatively mediated by higher exchange network centrality when business ends.