The invention belongs to the field of manufacturing of rubber sealing rings and relates to a method for removing rubber squeezed out of a die-assembly seam of a sealing ring with a special-shaped section. According to the method for removing the squeezed rubber in the die-assembly seam of the sealing ring with the deformed section, by designing the die structure reasonably, changing the section shape of the squeezed rubber and arranging a weak-strength area at the joint between the squeezed-out rubber and the sealing ring, the squeezed rubber can be removed only in a manual tearing mode, and the original working mode that the rubber is removed through tools such as scrapers and scissors is effectively eliminated. Compared with the original working mode, by the adoption of the method, the product quality is improved, the qualified rate is increased, and the working efficiency is greatly improved.