The invention discloses a measurement device for a curve shape of a frame, and relates to the technical field of hull building. The measurement device comprises a target installed on a frame chuck of a digital frame cold bender; the digital frame cold bender is provided with a tracking measurement device with the target as an object; the target is provided with a laser and a cat eye reflector; the tracking measurement device comprises a laser ranging device, an angle encoder, a photodetector for aiming at a laser beam emission point and a rotation unit for driving the laser ranging device, the angle encoder and the photodetector to rotate; the cat eye reflector reflects the beam of the laser ranging device; and the laser ranging device receives the reflected beam. Compared with a conventional device, the measurement device provided by the invention overcomes the problems that a steel wire string measurement device used in a conventional digital frame cold bender can hardly ensure the forming quality and the forming precision of a frame line shape and the detection efficiency is relatively low.