Hidden disaster factor is the main reason of mine geological disaster, based on the concealment and diversity of mine disaster, according to complicated geological structure of Taiyang Mine, Factor and exploration of hidden disaster were analyzed, ground and underground exploration should be combined to detect the hidden disaster. The result showed that the main factor of hidden disaster were gas, goaf, limestone water, fault, collapse column, unsealed drilling hole and water flowing fractured zone, based on the feature of the disaster, the corresponding measures were put forward, which provided reference for the exploration of mine hidden disaster.