Assembly structure of light source bearing plate and lamp holder

An assembling structure of a light source bearing plate and a lamp holder comprises the lamp holder and the light source bearing plate, a buckle positioning seat is arranged in the lamp holder, and a connecting positioning plate is arranged on the side, facing the lamp holder, of the light source bearing plate; side openings are machined in the two opposite side walls of the buckle positioning base, elastic buckle plates are arranged in the side openings, the upper portions of the elastic buckle plates are bent towards the inner side of the buckle positioning base to form buckle parts, elastic pressing plates are symmetrically arranged on the front edges and the rear edges of the two side walls of the buckle positioning base, and the upper portions of the oppositely-arranged elastic pressing plates are bent outwards in the reverse direction. The left side and the right side of the connecting positioning plate extend downwards to form side flanges, the middles of the side flanges are oppositely machined to for