Abstract：The investigation of coupled damage of and temperature mechanics(TM) for salt rock is very significant for the underground space in the salt rock. Based on previous studies and with the relation of statistical mechanics and fractal rock mechanics，the damage formulation of the coupled damage of temperature and mechanics is deducted. In order to verify the formulation，the experiments of salt rock under different confining pressures and temperatures are carried out. At the same time，the effects of confining pressure and temperature on the mechanics of salt rock are analyzed. Through the experiment，the results show that the confining pressure can restrain the damage increasing，and at a certain range of temperature，the temperature can weaken the damage increasing. The theoretical results agree well with the test results.
