The utility model discloses an air-pressurizing self-paint-spray device, which is characterized in that: an enclosed pressure-bearing paint accommodating container is arranged; an air-pressurizing pipe orifice is formed on the top of the paint accommodating container; one path of the air pressurizing pipe orifice passing through an air-pressurizing tee joint is communicated with an air-pressurizing air inlet pipe through a pressure adjusting valve, and the other path is connected with the inlet of a nozzle tee joint through an air outlet pipe and air outlet adjusting valve; the side wall of the bottom of the paint accommodating container is provided with a paint outlet pipe orifice; the paint outlet pipe orifice is connected with the other inlet of the nozzle tee joint through ta paint outlet pipe and a paint amount adjusting valve; and the nozzle is connected to the outlet of the nozzle tee joint. According to the air-pressurizing self-paint-spray device, paint spray is realized in an air pressurizing way, the paint spray amount can be adjusted, the paint surface is uniform, and an anti-rust effect can be ensured; and the structure is simple, convenience is brought to use, the working efficiency of workers is increased in a certain degree, damages of oil paint volatile matters to workers are reduced, and the labor quality of workers is improved.