Abstract: In order to explore a scientific and effective fault complexity evaluation method, through analyzing the basic characteristic indicators of the fault, based on the fractal theory, selecting the fractal dimension value of the fault, the fault density value, the number of fault interchange points and the fault intensity index as the evaluation indicators, we use the idea of game theory to construct a combined weighting method of order relation analysis method and entropy weight method, and evaluate the complexity of faults in the north No.10 mining area of Jiangzhuang Coal Mine. The results are as follows: the simple and medium tectonic areas of the fault are mainly located in the west, south and north of the study area, and are distributed in a ring shape; the lower complex structural areas are mainly located in the south and north of the study area, distributed in strips and blocks; the complex structural areas are mainly located in the middle of the study area, and some are scattered in the south and north; the extremely complex structural areas are mainly distributed in the central part of the study area in large blocks.