Abstract：Through coupled creep experiment and theoretical analysis of thermo-mechanical behaviors of bedded rock salt，the results are obtained as follows. (1) The creep ratios and creep strain of rock salt vary with ingredient and structural distribution. (2) Under normal temperature，the creep strain and creep ratios of bedded rock salt increase when its loading stress increases；and the steady creep ratios are with good power function of deviatoric stress. (3) Under thermo-mechanical coupling，the steady creep ratios are affected by temperature when the loading stress is the same；and the steady creep ratios of bedded rock salt are shown with exponential function of temperature. At the same temperature and stress，the transversal displacement，strain and creep ratios are larger than those of bedded salt-mudstone；the creep ratio in landscape orientation of rock salt is 1.6–1.8 times larger than that of salt-mudstone interlayer. (4) As the ingredient and structure of each interlayer of bedded rock salt are different，the creep strain is not consistent with the action of stress and temperature，and it will result in shearing failure. Finally，the creep constitutive equation of bedded rock salt is established according to fitting experimental data；and the achieved results can provide some references to the stability analysis of oil and gas storage cavern in bedded salt deposits.
