Automobile roof welding clamp

The utility model discloses an automobile roof welding clamp, which comprises a bedplate. A roof supporting mechanism is arranged in the middle of the bedplate; a plurality of roof positioning mechanisms matched with the edge of the automobile roof and a plurality of bracket positioning mechanisms matched with a roof bracket to be welded are distributed on the edge of the bedplate. Four roof positioning mechanisms and four bracket positioning mechanisms are adopted and distributed at four corners of the bedplate, wherein every two roof positioning mechanisms are distributed at the transverse edge of the bedplate; and every two bracket positioning mechanisms are distributed at the longitudinal edge of the bedplate. The automobile roof welding clamp can effectively solve the positioning and welding of the upper bracket of the automobile roof and can ensure the welding consistence. The automobile roof welding clamp is simple to manufacture, has low cost and strong practicability, and is beneficial to standardized operation and can be repeatedly used for a long time. The size of each constituent element such as the bedplate and the like can be correspondingly regulated according to the sizes of the different automobile type roofs.