The invention discloses efficient paint spraying equipment for wooden door processing and a surface paint spraying technology. The efficient paint spraying equipment comprises guide rail seats, guide rail baffles and guide rails are arranged at the upper ends of the guide rail seats, a paint spraying frame is arranged on the two guide rails, an operation panel is arranged on one side of the paint spraying frame, a liquid crystal screen, a power switch and setting buttons are arranged on the front side of the operation panel, the other side of the paint spraying frame is connected with a conveying pipe, a pressurizing paint bucket and a rolling crawler belt are arranged below the conveying pipe, a paint spraying head is arranged below the inner side of the paint spraying frame, a supporting seat, a supporting seat sliding block and a supporting seat guide rail device are arranged between the guide rail seats, a supporting seat guide rail baffle is arranged at the end of the supporting seat guide rail device, a wooden door limiting groove and a wooden door are arranged above the supporting seat, and fastening devices are arranged on the sides of the upper ends of the guide rail seats. Through the guide rails, the guide rail seats, the pressurizing paint bucket, the paint spraying head, the supporting seat guide rail device, the wooden door limiting groove and the like, conventional paint spraying equipment can have the functions of automatic paint spraying, automatic feeding, wooden door limiting and fixing and the like.