Abstract: There is provided a practical release film that maintains the excellent properties of a release film using syndiotactic polystyrene, and also has excellent embeddability. There is provided a release film for manufacturing a flexible printed circuit board having a release layer comprising syndiotactic polystyrene and a hydrogenated styrene thermoplastic elastomer, characterized in that the hydrogenated styrene thermoplastic elastomer is incorporated in an amount of 15 to 35 wt % based on the total resins of the release layer. The hydrogenated styrene thermoplastic elastomer is preferably (i) a styrene-ethylene-butylene-styrene block copolymer or (ii) a styrene-ethylene-propylene-styrene block copolymer. A cyclic polyolefin type resin may be further compounded in the release layer.