The invention relates to a breakage and slippage type rockburst risk relieving high-pressure water injection device and a construction method of the breakage and slippage type rockburst risk relieving high-pressure water injection device. According to the breakage and slippage type rockburst risk relieving high-pressure water injection device and the construction method, surrounding rock stress in a breakage zone and the energy concentration degree are reduced through high-pressure water injection, and rockburst risks are effectively removed. According to the technical scheme, the breakage zone deep buried into underground surrounding rock is arranged in front of a tunneling tunnel, two to three water injection drilling holes which are in large-angle intersection with the breakage zone are drilled from the tunneling tunnel to the breakage zone, and the water injection drilling holes penetrate through the breakage zone by 1 m to 2 m. A high-pressure water injection steel tube is placed in each water injection drilling hole, it is guaranteed that the length of the water injection steel tubes at hole opening sections is 2 m, and the hole opening sections of the high-pressure water injection steel tubes are connected with water inlet pipe connectors; a sealing rubber ring is arranged at a hole opening part of each water injection drilling hole, and the positions between the water injection drilling holes except for the water injection drilling holes in the positions nearby the breakage zone and the high-pressure water injection steel tubes are plugged through cement paste. The breakage and slippage type rockburst risk relieving high-pressure water injection device and the construction method are suitable for the field of deep-buried hard rock underground engineering.