A photochromic lens manufacturing system has an orderer side computer (101) and a manufacturer side computer (201) connected with each other through a communication line (300), and is adapted to manufacture a photochromic lens with an optical surface forming device (204), a photochromic film forming device (202) and a hard film forming device (204) under control of the manufacturer side computer (201). The orderer side computer (101) transmits lens substrate data related to a substrate material of the lens, optical surface data related to optical surfaces of the lens, data related to the photochromic film and data related to a hard film to the manufacturer side computer (201) through the communication line (300).The manufacturer side computer (201) comprises: a lens substrate selecting means adapted to select a lens substrate formed of a suitable material based on the lens substrate data received from the orderer side computer; an optical surface forming data selecting means adapted to select suitable optical surface forming data based on the optical surface data and output the selected data to the optical surface forming device (202); a photochromic film forming data selecting means adapted to select forming data of the photochromic film based on the data related to the photochromic film, and output the selected data to the photochromic film forming device (203); and a hard film forming data selecting means adapted to select forming data of the hard film based on the data related to the hard film, and output the selected data to the hard film forming device (204).