High-pressure water jet drilling device capable of conveniently adjusting jet angle

The high-pressure water jet drilling device comprises a base and a water storage bin, a water flow trepanning mechanism is arranged at the upper end of the base, the water flow trepanning mechanism comprises a fixing seat fixedly connected to the upper end of the base, a control frame is fixedly connected to the upper end of the fixing seat, and the control frame is fixedly connected to the lower end of the base. A rotating shaft is movably connected to the inner side of the control frame, a high-pressure gun is fixedly connected to the front end of the rotating shaft, and a pipeline is installed at one end of the high-pressure gun. According to the high-pressure water jet drilling device convenient to adjust the jet angle, the high-pressure gun rotates with the rotating shaft as the axis, the high-pressure gun drives the linkage rod to slide in the inner side of the indicating dial, so that the indicating plate points to the new position of the indicating dial, the spring enables the limiting rod to penetrat