Novel dog leash traction device convenient to disassemble

The invention discloses a novel dog leash traction device convenient to disassemble, and relates to the technical field of dog leash traction, the novel dog leash traction device comprises a shell, a rotating disc, a sealing plate and a locking assembly, the rotating disc is rotationally connected to a first mounting shaft of the shell, a coil spring is arranged at the rotating position, and the locking assembly is of a compression joint structure driven in a rotating mode; the rotating disc is provided with a round cavity with an opening in the single side, the sealing plate is used for packaging the coil spring in the round cavity, and the opening side of the round cavity is opposite to the shell split part of the first mounting shaft. Meanwhile, the coil spring can be replaced under the condition that the rotating disc is not taken out due to the fact that the combined surface faces outwards; the locking assembly adopts the rotating piece, complete locking of the rotating disc and the traction rope is achi