The invention provides a grounding device and a winching machine possessing the grounding device. The grounding device comprises a connection portion (10), a grounding wire (20) and a grounding conductor (30), wherein the connection portion (10) is used to connect with a machine body of the winching machine; one end of the grounding wire (20) is connected to the connection portion (10); the grounding conductor (30) possesses a connection terminal (31) and a grounding terminal (32); the connection terminal (31) is connected to the other end of the grounding wire (20). In the prior art, a machine body shell of the maneuvering winching machine has no grounding protection so that a potential safety hazard exists. By using a technical scheme in the invention, the above problem is effectively solved.