The integration of the three religions refers to the integration of Buddhism, Taoism and Confucianism, including Confucianism, Taoism and Buddhism. For this phenomenon, most scholars talk about the integration of the three religions. However, some scholars are extremely vague. They disdain the integration of Confucianism and Taoism, praise it or avoid talking about it, and even think that almost all Confucianism and Taoism ideas come from Buddhism. However, there is a process from the coexistence of the three religions to their integration. The appearance of the word "the unity of the three religions" in the Yuan and Ming Dynasties can be said that the relationship between the three religions has undergone an internal evolution.