The invention discloses a voltage guiding device, an enclosing apparatus, and a manufacturing method of an insulating hydrophilic coating. The surface of the voltage guiding device is coated with an insulating hydrophilic coating material. The voltage guiding device comprises a lead, an external mounting flange, an internal mounting flange, an outer side grading shield, and an inner side grading shield. The lead penetrating the wall body of the enclosing apparatus is used for guiding a needed voltage into the inside of the enclosing apparatus. The external mounting flange is arranged at the outer side of the wall body and a screw hole for fixation is arranged at the connection part of the external mounting flange and the outer side of the wall body; and the external mounting flange is fixedly connected with a guiding rod and the wall body. The internal mounting flange is arranged at the inner side of the wall body and a screw hole for fixation is arranged at the connection part of the internal mounting flange and the inner side of the wall body; and the internal mounting flange is fixedly connected with a guiding rod and the wall body. The outer side grading shield is connected to the external mounting flange detachably in a covering mode. The inner side grading shield is connected to the internal mounting flange detachably in a covering mode. Therefore, a high voltage can be guided securely to carry out high-humidity environment voltage testing and thus water drops absorbed to the surface can be laid to form a water film in a wetting mode, thereby preventing a corona discharging phenomenon caused by the water drops effectively.