An apparatus for a stress freezing experiment during a fracturing process. Temperature increasing and temperature decreasing processing under the control of a corresponding temperature are performed on a test piece (109) by means of a temperature control system, according to a photosensitive curve and in accordance with a pre-set temperature gradient, so as to realize the stress freezing of the test piece (109); a corresponding pressure is applied to the test piece (109) by means of a true triaxial servo loading system; and a corresponding fracturing experiment is then performed on the test piece (109) by means of a fracturing liquid pumping system (117), arranged in a thermostat (101), of an output end. Since the test piece (109) is a transparent photosensitive model obtained through printing with a 3D printer, intuitive observation and transparent display of a global stress field evolution law upon a complex seam mesh crack initiation and extension during a fracturing process can be realized by combining th
