As a significant factor, the institution which impacts financial development attracts widespread attention. Although there are numerous literatures on formal institutions (law, politics and property rights), few literatures discuss the relationship between informal institutions and financial development from the perspective of religious studies, ethnology, sociology or anthropology. This paper summarizes the literatures and data from multiple disciplines perspectives home and abroad and creatively studies diverse religious beliefs and national traditions popular in the West of China, trying to clarify its influence on financial development. Finally, this paper points out it is significant to attach importance to the impact of religious beliefs, national traditions on the coordinated development of Chinese economy as well as the maintenance of national unity and social stability.