Abstract: To improve the accuracy of coal seam wettability in coal mine, an evaluation model of coal seam wettability was established by using fuzzy comprehensive evaluation, in which the impact assessment weights were determined by using analytical hierarchy process（ＡＨＰ）. The result showed that coal seam wettability result of Mugua Coal Mine is 2.61, and this coal seam belongs to difficult wetting grade, which has the same conclusion with the measurement result by experimental apparatus. The evaluation model which based on AHP-fuzzy comprehensive evaluation can meet the need of prediction for the grade of coal seam wettability.