Corner connector connecting structure for door frame

The utility model provides a corner connector connecting structure for a door frame, and belongs to the technical field of articles for daily use. The corner connector connecting structure for the door frame comprises a door frame assembly, a reinforcing assembly and a fixing assembly. The door frame assembly comprises a first frame and a second frame, the first frame and the second frame are clamped together, when the door frame assembly is used, the positions of the sliding blocks on the sliding rods are controlled according to the positions of the second threaded holes in the reinforcing ribs and the positions of the threaded holes in the first frame and the second frame, and the second locking pieces are rotated; the tail end of the second locking piece extrudes the outer wall of the sliding rod to enable the sliding block to be fixed to the sliding rod, finally, the first locking piece is rotated, one first locking piece is arranged in the second threaded hole in a threaded mode,the other first locking p