The invention discloses a device for cleaning residues in a drill rod after the drill rod is pulled out. The device is characterized in that the device comprises a propulsion assembly and a cleaning assembly; the propulsion assembly comprises a winch, a horizontal slideway and a two-wheeled fixed pulley; the cleaning assembly comprises an external flexible pipe and a cleaning head; the horizontal slideway is arranged at the upper end of a derrick; the winch is arranged at the lower end of the derrick; one end of the external flexible pipe is wound on the winch; and the other end of the external flexible pipe goes round the two-wheeled fixed pulley and then is connected with the cleaning head. The device further comprises a recovery device; the recovery device comprises a waste liquid recovery pool, a water pump, a connecting duct and an evacuation pool that are connected sequentially, wherein the waste liquid recovery pool is used for storing waste liquid after the cleaning head cleans the drill rod. The pollution problem caused by the fact that the drill rod stays on a drill floor surface after the drill rod is pulled out and liquid mixtures like drilling liquid is remained on the drill floor surface due to the self weight is solved, and the device overcomes the disadvantages of cleaning by using a manual hand-held hydraulic giant.