Abstract: The present utility model relates to a middle strip of a door frame, which can effectively solve the problem of insufficient strength existed in the middle strip of the door frame of the prior art. A middle strip of a door frame comprises a middle strip body, wherein a positioning hole is disposed in the middle strip main body along the length direction of the middle strip body, and the positioning hole is provided with a support frame in order to enhance the strength of the middle strip body, and the support frame is arranged along the inner wall of the positioning hole.