Yinshun saw the weakness and strangeness of Buddhism in the Republic of China, and found that there was a big gap between reality and Buddhism. He continued Taixu's reform career, was inspired by Japanese Buddhist writings, and found out why Chinese Buddhism was trapped. He wanted to carry out doctrinal reforms for Chinese Buddhism, and began by studying Indian Buddhism. Yinshun, based on various facts and evidences in the classics, divided Indian Buddhism into three periods, and then divided Indian Buddhism into five periods of evolution, gradually establishing a system for Indian Buddhism. Yinshun's academic policy is rooted in Buddhism during the Buddha's lifetime. From the early scriptures, he grasped the characteristics of the Dharma of "the doctrine of Dependent Origination and No Self". The Buddha's Teachings should come from the Buddha's righteous enlightenment and the spirit flowing from the righteous enlightenment , and Mahayana thought originates from the Buddha's spirit of compassion and wisdom.Buddhism is not limited to the existing "Buddha said" literature, outdated Buddha said can be eradicated. Shravaka Buddhism incorporates indian Customs, and the convenience of adapting to changing circumstances and times cannot meet the needs of today's society. True and eternal idealism and eternal ego theory merge, and the secret religion is seriously Sanskritized, these dharmas have been distorted.Yinshun criticized Buddhism and identified Buddha's Teachings, affirmed Nagarjuna's bodhisattva spirit, and explained the practice and interpretation of the early Mahayana. Buddhism, which attaches importance to human affairs and seeks happiness in the world, can adapt to the new roots of non-religious young people and conform to the trend of world Buddhism that takes lay people as the main target.