The utility model discloses a kind of injection mould side edge inclined top demolding mechanism, comprising: slider mechanism and inclined top mechanism, slider mechanism includes slider, slider can be slid along the direction perpendicular to the direction of injection mould opening and closing to exit first reverse buckle position on product;Inclined top mechanism includes inclined top, inclined top slider, inclined top seat and inclined top limit block, slider is provided with first inclined hole, inclined top is slidably installed in first inclined hole and is connected with inclined top slider, one end of inclined top seat is equipped with first sliding slot, inclined top slider is slidably installed in first sliding slot, inclined top can be driven by slider and be slid along the direction of first sliding slot to exit second reverse buckle position on product;Inclined top limit block is fixed on the front mould of injection mould, the other end of inclined top seat is abutted on inclined top limit block.The utility model can effectively solve the demolding problem of multidirectional reverse buckle product in limited mould space, and also can simplify mould structure, reduce mould manufacturing cost.