To shorten a molding time by enhancing a molding accuracy in a laminating direction and preventing a curing deformation of a resin model to be obtained while enhancing interlayer adhesive properties.

A method for optically molding obtains a stereoscopic resin model W by the steps of scanning a light beam LB on a surface of a photosetting resin liquid 1 and sequentially laminating cured scanned cured layers 6. In this case, in order to scan the beam and to cure the resin, a curing depth D of a region to be cured by depositing on a region 51 cured by previous time scanning is set larger than that of a region cured by deposited on a region 52 not cured by the previous time curing. A scanning phase of the region cured by the previous time scanning and a scanning phase of the region cured by this time scanning are relatively deviated.