The invention discloses a welding table for a PCB. The welding table comprises a rectangular frame, a rotating shaft connected on the rectangular frame, and an overturning plate which rotates around the rotating shaft, wherein a plurality of welding holes are distributed in the overturning plate in a matrix; binding strips used for fixing the PCB and covering the welding holes are arranged on the overturning plate; a support table used for supporting the overturning plate is connected in the rectangular frame in a sliding manner in the horizontal direction; a welding plate is connected in the support table in a sliding manner in the up-and-down direction; a plurality of welding units in matrix distribution which can stretch into the welding holes are arranged in the positions, corresponding to the welding holes, on the welding plate; the welding units comprise barrels arranged on the welding plate, electroconductive racks which are arranged in the barrels and are coaxial with the barrels, and flexible plates which are arranged at the top ends of the barrels and are used for covering the barrels and the electroconductive racks; the flexible plates have elasticity; openings which penetrate through the flexible plates are formed in the flexible plates; the electroconductive racks are of hollow and meshy structures; the upper ends of the electroconductive racks are semispheres used for wrapping key welding points; and the lower ends of the electroconductive racks are of tubular structures which communicate with the upper ends.