PROBLEM TO BE SOLVED: To provide a mold for injection molding that is simple and has high dimensional accuracy, and is suitable for making a stent exhibiting performance in an in-vivo lumen while suppressing a manufacturing cost to a low level by simplifying a mold structure as much as possible.SOLUTION: A mold 10 for injection molding provided with a cylindrical molding space 11 forming a stent having a plurality of through holes on its peripheral surface comprises two outer molds 30, 31 for forming an outer surface side of the stent and two inner molds 20, 21 for forming an inner surface side of the stent. An outer peripheral surface shape of a first inner mold-side molding surface 20a and an inner peripheral surface shape of a first outer mold-side molding surface 30a are formed into a shape separable from the stent by axial relative movement with respect to the stent formed in the cylindrical molding space 11. An outer peripheral surface of a second inner mold-side molding surface 21a and an inner peripheral surface of a second outer mold-side molding surface 31a are respectively formed with an inner mold-side projecting parts 21b and an outer mold-side projecting parts 31b forming the plurality of through holes of the stent.
