PURPOSE: A forming method for a doubly curved metal plate is provided to obtain desired final radius of curvature in transverse and longitudinal directions by calculating initial radius of curvature considering springback and inputting the calculated initial radius of curvature to a roll forming device. CONSTITUTION: A forming method for a doubly curved metal plate comprises the steps of: determining an initial radius of curvature considering springback for forming a metal plate to a final radius of curvature(S2) and forming the metal plate according to the initial radius of curvature in transverse and longitudinal directions, thereby obtaining a curved metal plate reflecting the final radius of curvature(S3,S4). [Reference numerals] (S1) Inputting physical properties and geometric information of a material; (S2) Calculating an initial radius of curvature(radius of bending); (S3) Setting roll height of a curvature forming device by reflecting an input lateral radius of curvature and forming to obtain a lateral radius of curvature; (S4) Setting roll height of the curvature forming device by reflecting an input longitudinal radius of curvature and forming to obtain a longitudinal radius of curvature; (S5) Completing forming
