The invention belongs to the technical field of transmission line devices and particularly relates to a water-resistant and water-removing maintenance device for a cable head. The water-resistant andwater-removing maintenance device comprises a front support frame and a rear support frame which are arranged on a base, wherein a driven cable wheel is arranged on the rear support frame; a water removing mechanism is arranged between the front support frame and the rear support frame; a cable driving mechanism is arranged on the front support frame and comprises a driving cable wheel arranged onthe front support frame; a slider capable of sliding vertically is arranged in the front support frame; a pressing cable wheel in rotational connection is arranged on the slider; a bolt for pressingthe slider is arranged on a support frame.