The invention relates to the field of manufacturing of electronic component integrated boards, in particular to a PCB welding and clamping base. The PCB welding and clamping base comprises a base body, a supporting platform, upper clamping strips and lower clamping strips. The base body is of a square structure. The supporting platform is fixed to the base body. The upper clamping strips are fixed to the two sides of the supporting platform. The two sides of the upper edge of the supporting platform are further provided with the lower clamping strips matched with the upper clamping strips. The lower clamping strips are connected with the supporting platform through springs. The horizontal middle of the supporting platform is provided with a rotary rod. The rotary rod is connected with the supporting platform through bearings. The supporting platform is provided with cams. Sliding blocks are fixed to the lower ends of the lower clamping strips. The cams abut against the sliding blocks. The inner sides of the upper clamping strips on the two sides of the supporting platform are both provided with illuminator tubes. The PCB welding and clamping base has the advantages that the illuminator tubes are arranged on the inner sides of the upper clamping strips, so PCBs clamped on the supporting platform can be welded conveniently under bright light rays.