The utility model discloses a drag bit device, it relates to petroleum engineering well drilling technical field, and drag bit device includes: the body, the reaction chamber that is provided with heating power efflux unit on the body and is linked together with heating power efflux unit, heating power efflux unit includes: at this internal through hole of offering, the first spring of setting inthe through hole, first flexible pipe with the counterbalance of first spring, the setting is at first flexible intraductal second spring and the flexible pipe of second, the upper end of first springcan be fixed mutually with the body, the second spring is connected with the flexible pipe of second, the flexible pipe of second can slide in first flexible pipe so that the lower extreme of the flexible pipe of second stretches out the through hole, the reaction chamber is used for generating heating power efflux fluid, and give heating power efflux unit with the fluid transportation of heatingpower efflux, the cutting teeth still has on the body, the heating power efflux ignition unit who is connected with the reaction chamber, the heating power efflux ignition unit be used for igniteingto the reaction chamber.