Abstract: To solve the goaf water disaster of Hanzui Coal Mine, aiming to the technical problem of detection and drainage for goaf water with long distance under complicated geological conditions that the coal seam is soft and the floor is badly mudstone, the method of goaf water disaster control technology by means of hook directional long drilling is proposed. Some techniques are studied such as the optimization design of borehole structure, combination optimization of drilling tools, straight maintenance drilling of casing section large diameter, trajectory control, goaf penetration technology, etc. The goaf water detection and drainage application is carried out on the north side of main haulage lane of 32101 working face in this mine. The accurate target goaf successfully is achieved at the hole depth of 526.4 m and vertical depth of 31 m. The single-hole water yield reaches 134 m3/h with a total of 36,000 m3 goaf water discharged, and the purpose of fixed-point discharge is realized, which provides reliable geological guarantee for the safe and efficient production of 32101 working face.