Since the late Qing period, people regarded the natural disasters, and the suffering due to the domestic and outside causes as doomsday catastrophe. Thus, doomsday rescue had become urgently important, and the morality books such as gods rescuing doomsday appeared in large numbers. It shows that people have a high expectation for the gods to save the suffering, and Guanyin Bodhisattva is one of the most important gods in this matter, which resulted in a lot of morality books related to Bodhisattva. Although the belief in Bodhisattva among Chinese originated from Buddhism, the main promoters for Bodhisattva rescuing doomsday are folk religion societies, charity groups or organizations and individual "believers". It was manifested by a large number of Bodhisattva morality books since the late Qing period. Bodhisattva had the qualities of compassion in rescuing the suffering people. The spread of morality books about rescuing doomsday in turn promoted the distribution of Bodhisattva belief more widely. As the folk society endowed a new interpretation of Bodhisattva by combining its original meaning with the new ones, the Bodhisattva belief in China thus had a new connotation. We may also regard it as a Bodhisattva belief with more "folk" characteristics.