The invention discloses an improved structure of a fractured root of an aluminum profile die of an LED (Light Emitting Diode) lampholder. The improved structure comprises an upper die and a lower die,wherein the upper die and the lower die are fastened, and a male connector of the upper die sleeves the interior of a forming hole of the lower die; a plurality of diversion strips are arranged in the middle of the upper die, a male connector is fixedly installed in the center of the upper die, a plurality of forming blocks are longitudinally arranged on the side wall of the male connector, forming grooves are formed between adjacent forming blocks, and the forming blocks with narrow roots are opposite to the diversion strips. According to the improved structure, more than five diversion strips are arranged in the middle of the upper die, and the forming blocks with the narrow roots of the male connector are opposite to the diversion strips, so that the impact of aluminum materials on theroots of the forming blocks with the narrow roots of the male connector is preferably prevented by the diversion strips, the extrusion force on the forming blocks is small, and the forming blocks aredifficult to fracture. In addition, the top surface of a clamping block of the male connector of the improved structure is abutted with the bottom surface of the protruding edge of an upright post and then is welded, so that the male connector can bear high longitudinal pressure and cannot separate from the upright post, and the overall strength is high.