Abstract: Taking the anthracite coal in Fanzhuang and Zhengzhuang blocks as the research object, the occurrence, migration and output path of gas and water in coal reservoir and its model were analyzed based on the permeability and nuclear magnetic resonance imaging experiments. The results show that the coal seam water in macropore and microscopic fracture with the pore diameter <1 μm is mainly non-mobile water; exogenous fracture, endogenous fracture and microscopic fracture co-constitute the migration and output path of coal seam water, especially the fracture with the width >10 μm; micropore and mesopore are the main occurrence spaces of CBM, and mesopore, microfracture and endogenous fracture are the main channels for migration and output of CBM, which are very important for migration and production of CBM. Among them, the development of pore and microfracture with the pore diameter >0.5 μm in coal reservoir of Fanzhuang and Zhengzhuang blocks is relatively weak, which restricts the gas production effect.