Sixty-four hexagrams compass is a kind of geomantic compass, which contains 64 hexagrams, each of which represents good or bad luck in geomantic omen. In geomantic omen, the compass is used to determine the orientation and good fortune, and the sixty-four hexagrams of the sixty-four hexagrams compass correspond to the sixty-four hexagrams of Zhouyi. When using the compass, we can analyze the good and bad situation in the environment by measuring and interpreting the divinatory symbols, and provide corresponding suggestions for feng shui adjustment. This kind of compass is widely used in geomantic omen, and it is one of the necessary tools for geomantic omen.