The invention discloses a side core-pulling mold. The side core-pulling mold comprises a fixed mold plate and a movable mold plate which are in embedment fit with each other, and further comprises a core sliding block for being matched with an injection molding piece. An inclined column is convexly arranged on one side of the core sliding block and used for formation of the injection molding piece. The core sliding block is in sliding fit with the fixed mold plate. A sliding block pulling mechanism is arranged on the movable mold plate and used for pulling the sliding block when the movable mold plate is separated so that movable mold plate can be separated from the fixed mold plate. According to the side core-pulling mold, the core sliding block is arranged and is in sliding fit with the fixed mold plate; the pulling mechanism is connected with the movable mold plate, so that the core sliding block is pulled out from the fixed mold plate by pulling the pulling mechanism during movable mold plate separation; the pulling mechanism is matched with the sliding block, and thus, a core can be precisely separated from the mold plates; the separation mode of the core is stable and precise, and accordingly, the machining precision of the mold core position is ensured; and the design structure is relatively simple, and the core can be separated from the mold plates through only the pulling mechanism, so that the technical problems that existing side core-pulling molds are complex in structure, high in manufacturing cost, poor in machining precision and the like are solved effectively.