Waterproof tail cable with good waterproof effect

The invention discloses a waterproof tail cable with a good waterproof effect, and relates to the technical field of waterproof tail cables. The waterproof tail cable with the good waterproof effect comprises a tail cable body and a connector, the left end of the connector is connected with a backbone optical cable line, the tail cable body can be connected to the right end of the connector, a sealing piece is arranged at the right end of the connector, and the sealing piece comprises a screw-in nut and a sealing plate. According to the waterproof tail cable with the good waterproof effect, the tail cable main bodies can be fixed by arranging the screw-in nuts, the sealing plates and the sealing through holes, and the sealing effect of other sealing through holes can be guaranteed when a small number of tail cable main bodies are installed by arranging the shielding circular plates; meanwhile, a driving plate, a hollow rubber ring and a piston are arranged, so that the friction force between the tail cable ma