The invention discloses a robot welding gun frame platform with an auxiliary adjusting device. The robot welding gun frame platform is characterized in that one side of the welding gun frame platform is independently provided with the auxiliary adjusting device, the auxiliary adjusting device comprises a supporting rod which is vertically arranged on a fixing seat, the top part of the supporting rod is fixedly connected with a screw rod with adjustable height through a nut, the top part of the screw rod is provided with a T-shaped horizontal frame seat which is fixedly connected, the horizontal frame seat is fixedly provided with a nylon support, and a welding gun supporting frame is formed together by the nylon support and a welding gun disc on the welding gun frame platform. According to the robot welding gun frame platform with the auxiliary adjusting device, disclosed by the invention, an auxiliary device is provided for the robot welding gun frame platform, a larger welding gun can also be firmly supported, the potential safety hazard is removed, and the site requirement is met to a certain degree.