Aiming at the high risk of rock burst in the longwall faces along the goaf in the Hetaoyu Coal Mine, which has a kilometer-depth burial, extra-thick coal seam, and thick hard roof, research and application of the hydraulic unloading technology system for the low, middle, and high roof of the working face have been carried out. The results show that the rock burst in the goaf roadway is affected by the superposition of the overhanging roof in the goaf, the mining stress of the working face itself, and the high roof fracture dynamic load after double-sided mining. Combined with the mine conditions, a local + regional hydraulic roof unloading technology system was proposed, using abrasive waterjet for lateral roof cutting, underground long-hole segmented hydraulic fracturing, and high roof ground regional fracturing measures to achieve roof cutting on the side of the working face along the goaf, roof breaking in the strike direction, and regional weakening of the high roof. The engineering practice of hydraulic roof unloading technology was carried out in the 2803 working face. Through borehole peeping, transient electromagnetic detection, and micro seismic monitoring and analysis, the prevention and control effect of hydraulic roof unloading technology is significant. Compared with the adjacent solid coal working face without hydraulic unloading measures, the micro seismic energy release and the on-site dynamic manifestation have been significantly reduced, forming a hydraulic unloading technology system for thick and hard roof in the working face along the goaf in Hetaoyu Coal Mine.