Abstract: The base of the Door-god worship should be sought from the particularity of the primitive thoughts, while the shaping of the concept of ghosts and gods is the direct driving force for its emergence. Actually, the worship of Door-god is a kind of worship of sorcery, which realizes its expected result through sorcery. This worship is unreasonable and useless from our point of view; but for its creators and propagators, it is pragmatic and successful. Certainly, with the change of society and the progress of technology, the function of the Door-god worship also changes. Its mystical factors have gradually weakened and even disappeared, and it becomes more worldly and ornamental.