A laminate molding equipment (1) includes a molding part (2) provided with a molding table (23) on which a three-dimensional shape molded object is molded, a powder layer forming part (3) configured to supply material powder on the molding table (23) to form a powder layer (M), a light beam radiating part (4) configured to radiate a light beam to the powder layer (M) laminated on the molding table (23) and select a region to form a solidified layer, and a control part (5) configured to control operation of the respective parts, wherein the control part (5) recognizes a moldable region on the powder layer (M) already formed while the powder layer forming part (3) starts forming one powder layer and completes forming the one powder layer, and radiates the light beam in the moldable region. As a result, molding time can be shortened by starting the light beam radiation without waiting for completion of the formation of the powder layer.