A die cushion device for a press machine includes: a hydraulic cylinder (3) for supporting a cushion pad (2) and generating a die cushion pressure when a slide of the press machine moves downward; a proportional valve (10) and a hydraulic pump/motor (4) connected in parallel between a lower chamber of the hydraulic cylinder (3) and a low-pressure source (6); an electric motor (5) connected to a rotating shaft of the hydraulic pump/motor (4); a die cushion pressure command issuer (60) for outputting a predetermined die cushion pressure command; a pressure detector (21a) for detecting a pressure in the lower chamber of the hydraulic cylinder (3); and a controller (70) for controlling an aperture of the proportional valve (10) and a torque of the electric motor (5) in a manner that the die cushion pressure becomes equal to a pressure corresponding to the die cushion pressure command, based on the die cushion pressure command and the pressure detected by the pressure detector (21a).