Abstract: In order to study the development characteristics of ground fissures in Suntuan Coal Mine, the ground fissures on the mining subsidence area in 1047 working face and 10111 working face in the study area were investigated by various field detection techniques. The results show that: the internal fissures have a certain periodicity from formation to closure, and the period is about 4 weeks; the spacing of adjacent peripheral fissures has a significant positive linear correlation with the distance from the working face boundary; the development and extension position of peripheral fissures slightly lags behind the mining position of working face, and after a short and rapid development, the growth rate of its surface width gradually decreases until it is stable; the dip angle of several stable peripheral fissures along the advancing direction perpendicular to the working face decreases with the increase of the distance from the working face boundary; for the developed stable peripheral fissures, the depth and width show a logarithmic function relationship.