The rockburst seriously affects the safety and production of coal mines. Based on the principle of ultra-high pressure water jet slotting coal seam pressure relief, the rockburst coal seam water jet slotting anti-rockburst technology is proposed. Firstly, the stress wave intensity on both sides of the slotting groove was analyzed, revealing the dynamic load blocking effect of water jet on the slotting groove inside the coal seam. The slotting groove can block the propagation path of dynamic load inside the coal layer, and the stress wave intensity is greatly reduced after entering the slotting groove, thereby reducing the damage of impact load to the mining space; the relationship between the settlement and supporting force of cut seam coal was studied. As the ultra-high pressure water jet cuts the coal and destroys its integrity, the pressure bearing capacity of cut seam coal decreases, thereby improving the stress environment of the coal seam and achieving unloading and load reduction of cut seam coal; The relationship between the width of the plastic zone of the slotting seam and the starting conditions of the impact ground pressure was analyzed. The slotting seam near the mining space can extend the width of the plastic zone of the surrounding rock of the roadway, and the water jet slotting seam has an increasing impact barrier effect on the coal body. Then, numerical simulation analysis was conducted on the stress distribution of the coal body in the coal seam slotting area of the coal mining face and section. It was found that the slotting groove formed by high-pressure jet slotting inside the coal seam can effectively alleviate the stress concentration state in the seam slotting area, and transfer the high stress area to the deep coal body. The rational process parameters for coal seam slotting were obtained from the perspective of stress relief, with a reasonable slotting drilling depth of 20m and a slotting drilling spacing of 3m. Through the on-site application of ultra-high pressure water jet slotting pressure relief and anti-rockburst technology in the fully mechanized top coal caving working face of Hujiahe Coal Mine, the average event energy decreased by 18% within a 100m mining mileage range, the microseismic energy per unit footage decreased by 37%, and the number of measures required for the evaluation of the working face ground sound trend method decreased by 56%. This indicates that ultra-high pressure hydraulic slotting technology can effectively reduce the risk of rock burst in mining working faces and provide more technical means for the management of rock burst disasters in coal mines.