The invention discloses an automobile elbow pipe core-pulling mechanism which comprises a product and a lower mold plate. The product is located on the lower mold plate; an arc-shaped groove is formedin the product; an annular bulge is arranged at the front end of the product; a circular groove is formed in the annular bulge; the diameter of the circular groove is larger than the diameter of thearc-shaped groove; the circular groove communicates with the arc-shaped groove; a first insert core for forming the inner wall of the circular groove is arranged in the circular groove; and a second insert core for forming the inner wall of the arc-shaped groove is arranged in the arc-shaped groove. The automobile elbow pipe core-pulling mechanism further comprises a first-time linear core-pullingmechanism for core-pulling the circular groove, and a second-time arc core-pulling mechanism for core-pulling the arc-shaped groove, wherein the first insert core is connected with the second insertcore; and the second-time arc core-pulling mechanism is located on the lower mold plate. The invention provides the automobile elbow pipe core-pulling mechanism which is not easy to damage when beingpulled and has high reliability.