The utility model discloses a waterproof charging docking device for a high-voltage overhead line. The utility model relates to a charging docking device. The device comprises a power receiving seat on a line patrol robot, and a solar charging system and a charging seat which are fixed on a strain tower, the solar charging system is connected with the charging base through a circuit; the power receiving base and the charging base are in butt joint for charging. A power receiving base is arranged on the upper portion of a front mechanical operation arm of the line patrol robot. the charging seat is fixed on the support frame; the lower end of the supporting frame is fixedly installed on a ground wire, the upper end of the supporting frame is fixed to a strain tower through a connecting piece, a square waterproof shell is arranged outside the charging base and is arranged to be in a telescopic square corrugated pipe shape, a baffle is arranged at the rear end of a bottom plate of the waterproof shell, and a spring A is connected between the baffle and the supporting frame. According to the utility model, the telescopic waterproof shell is arranged, so that the waterproof purpose is realized, the battery does not need to be dismounted for charging in the inspection process, and the inspection efficiency is greatly improved.