D. T. Suzuki (1870-1966) is a philosopher of Zen Buddhism known as a person who introduced it to the West. He is known for studies not only about Zen but also Pure Land thought on Buddhism, and he was certain that there was a kind of common state between Zen and Pure Land thought. He studied about both Zen and Pure Land thought all his life, in particular, his thought achieved remarkable development from the 1930’s to the 1940’s. One of the reasons for this development was connected with a discovery of the people called myoko-nin in the early 1940’s. Myoko-nin are the people who are firm believers on Shin Buddhism. Through contact with their faith and their religious experiences, Suzuki deepened his understanding about Pure Land thought. In this paper, the author will compare Suzuki’s Pure Land thought in the 1930’s with that in the 1940’s, and attempt to clarify the reason why he devoted himself to myoko-nin studies and how the studies influenced on his Pure Land thought and his whole philosophy.