Laser rock cracking device considering different-temperature liquid submerging environment

The invention relates to the technical field of rock laser cracking experiments, and discloses a rock laser cracking device considering different-temperature liquid submerging environments, which comprises an optical experiment platform, an experiment cavity, a laser device, a submerging container, a water bath heating device and a waste liquid collecting device, adding water into the submerging container to submerge the sample; the laser device comprises an optical fiber laser, an optical fiber collimation focusing head and a plane mirror, and laser emitted by the optical fiber collimation focusing head is reflected by the plane mirror and then can irradiate a submerged sample for a laser fracturing experiment; the water bath heating device comprises a temperature adjusting container, a heater and a temperature sensor, the submerging container and the temperature adjusting container are communicated through a water inlet pipe A and a water return pipe, a water inlet pump A is arranged on the water inlet pipe