The invention discloses an injection mold for secondary demolding of a movable mold side rib position. The injection mold comprises a front mold plate (1), a rear mold plate (2), a movable mold core (3), a static mold core (4) and a supporting plate (5), the movable mold core (3) is fixed with the rear mold plate (2), the static mold core (4) is fixed with the front mold plate (1), and the supporting plate (5) is fixed with the rear mold plate (2). According to the injection mold for secondary demolding of the movable mold side rib position, two-step mold opening is adopted, normal demolding of barbs of the inner ring and the outer ring can be guaranteed, the structure is simple, and reliability is good.