The utility model discloses a trunk sealing strip structure. The clamping part comprises a foam pipe, a clamping part main body, a step-shaped steel belt, a first lip edge, a second lip edge and innerteeth, a clamping part main body is arranged at the lower part of the foam pipe; the main body of the clamping part is step-shaped; a step-shaped steel belt is arranged in the clamping part main body; the upper part of the clamping part main body is a supporting part; a first lip edge and a second lip edge are arranged on the side edge of the clamping part main body; internal teeth are arranged on the lower portion of the inner side of the clamping portion main body, and an elastic extrusion portion is arranged on the upper portion of the inner side of the clamping portion main body. When theclamping portion is assembled with an automobile side wall metal plate, the lip edge is prevented from wrinkling, the sealing reliability is good, the limiting effect on an automobile trunk cover canbe achieved, and the cost is low.