Buddhism and Islam, two of the different religions or beliefs in China, have exerted significant impact on Chinese cultural characteristics and led to various cultural phenomena since their propagation in China a long time ago. According to plentiful historical data, the author of this paper analyzed the different influences of the two religions in the spiritual area of Chinese people and tried to find out the main reasons for them in order to arise the awareness to the great roles of the two religions in Chinese culture, which the author think will do favor to promote the harmony of all the nations in China.