To provide a mold for injection molding capable of facilitating change operation of an insert mold, disposing a plurality of insert molds, and being applied even when the insert mold is not a material which does not receive a magnetic force.

In the mold for injection molding for forming a cavity part between a fixed mold and a movable mold, the fixed mold and/or the movable mold has a recessed part, the insert mold disposed with a plurality of through-holes having spot facings on the face for the molded products are fixed to the bottom surface of the recessed part through the through-holes, and the mold for injection molding has a screw for preventing molten resin from entering the spot facing part of the insert mold.