The invention discloses a release film for a photo-curing three-dimensional manufacturing device. The release film comprises a release film body covering the inside of a container for containing a photocurable material; the surface, touching the release film body, of the photocurable material refers to a surface for photo-curing. The release film is characterized in that the release film body is made of a lyophobic material and provided with multiple internal channels communicated mutually; a part of the channels form pores on the surface of the release film body, and under action of the pores, the contact surface of the photocurable material with the release film body forms slits. The release film has the advantages that the contact area between the release film body and the cured photocurable material is small so that adhesive power of them is low and 3D manufacturing speed is increased; as the release film body is of a fixed stable structure, the processing for preparing the releasefilm is simple and convenient.