The invention discloses a high-pressure airless spraying auxiliary spraying angle control, monitoring and evaluation system, belonging to the field of painting, and the technical proposal thereof is that the system comprises: a frame and a camera mounted on the frame, wherein the frame is provided with a tilt adjusting fixture for placing a sprayed sheet; the frame is further provided with a high-pressure airless sprayer for high-pressure airless spraying, and the spray gun in the high-pressure airless sprayer is further mounted with an angle detector for detecting the angle of the spray gun and an infrared distance sensor for measuring the distance between the spray gun and the sprayed sheet; the system further comprises a heading device for signal display, and the heading device is provided with a PLC controller and two light bulbs of different colors. The high-pressure airless spraying auxiliary spraying angle control, monitoring and evaluation system can perform auxiliary angle control on the spray gun at high pressure airless spray, and also facilitate the monitoring and assessment of high pressure airless spray operators.