The utility model provides a kind of injection mold convenient to split, it is related to injection mold structure technology, specifically discloses mounting seat and fixed mould, fixed mould is installed on the side wall of mounting seat, the outside wall of fixed mould is provided with several movable moulds, several movable moulds are set on the outside of fixed mould along the circumferential direction of fixed mould, several movable moulds successively assembled are similar circular table structure, the side of similar circular table structure deviating from mounting seat has feed inlet, and the inside of similar circular table structure has main body chamber, the bottom of main body chamber is closed after the partial embedding of fixed mould in main body chamber, the top of fixed mould is provided with with the auxiliary body chamber that communicates with main body chamber, mounting seat is equipped with for guiding several movable moulds synchronous movement guide structure, the synchronous radial movement of all movable moulds is realized by the cooperation of guide groove and guide strip under the cooperation of the 4 movable moulds around fixed mould;Make movable mould when opening mould can quickly, consistently separate.