Abstract：The mechanical experiment of 44 sandstone specimens in the sixth mine of Hebi under high temperature and after high temperature is introduced；and the regularities on the strength and deformation character with temperature varying are proposed. The results show that peak-value strength，elastic modulus，and deformation modulus of sandstone under high temperature and after high temperature are gradually decreased with general similar variation tendency. The elastic parameters of some specimens are higher than those under common temperature. Compared with both of them，the peak-value strength，elastic modulus，and deformation modulus of sandstone after high temperature increase by a little and they are all brittle fractures. The results provide experimental basis for stability of surrounding rock when heat exits in the place of firing and variation regularity of strain field and displacement field.
