The utility model relates to the field of rock oil drilling equipment, more particularly relates to a pair of casing tongs, and solves the problems that a pair of existing casing tongs is difficult to screw and unscrew, and uneven in screwing and unscrewing stress. The casing tongs comprise an upper clamping revolved body and a lower clamping revolved body, an oil cylinder and a connecting rod, wherein the oil cylinder is arranged on the outer wall of the lower clamping revolved body. The casing tongs provided by the utility model are uniform in screwing and unscrewing stress, and convenient to screw and unscrew.