Basing on the thought about "Mahayana Buddhism, non-Buddha's doctrine"(大乘非佛說) and ideas of "New Buddhism Movement"(新佛教運動), recent scholars in Japan put forward the theory of "Buddha is a human"(佛陀人間論), in which theory exploration, has high similar characteristic to "Humanistic Buddhism"( 人間佛教) started by subsequent Chinese monks such as Master Taixu、Master Yinshun and so on. It was lacking material evidences about whether "Humanistic Buddhism" in China was influenced by thought of Buddhism from Japan or not, However, one fundamental fact could be realized is that, as a pioneer, Master Taixu maybe have some understanding about the theory of "Buddha on Earth" in his early life. Master Taixu preferred to adopt the concept of "Humanistic Buddhism", which is very likely due to different distinct understanding about "Earth" in "Buddha on Earth "in Chinese and Japanese.