Combining laser technology with traditional drilling technology to achieve high efficiency rock breaking has extremely important value and prospect in the field of oil and gas exploitation.At present,there are some researches on the fracture law of rock by the light beam of static point in China,but there is no related research on the fracture law of rock by the moving laser beam and different shapes of laser beam .Based on the actual drilling conditions,this paper establishes a numerical model of linear laser energy field distribution,and establishes a numerical model of temperature field distribution of moving linear laser through the theory of heat transfer.Using COMSOL Multiphysics finite element simulation software,the thermal-mechanical coupling transient simulation of the moving linear laser-induced granite process was carried out.The temperature distribution of the moving linear laser-induced granite was obtained.Based on the Mohr-Coulomb failure criterion,the damage morphology of the laser-induced granite was simulated.By comparing the experimental data with the simulation results,the rationality of the numerical model of temperature field distribution in rock breaking by moving linear laser is verified.According to the variation of density,porosity and uniaxial compressive strength of granite before and after laser irradiation,the related data of laser damage to rock under the above parameters are obtained,which provides some data support for matching laser and mechanical parameters reasonably.