The invention discloses a high-voltage cable joint manufacturing method by means of semiconductor coating. The high-voltage pothead manufacturing method comprises the following steps of manufacturing environment determining, cable accessory checking, outer protection layer and armor stripping, internal protection insulating layer processing, core wire processing, stress pipe installing, cable grounding processing and protecting sleeve pipe shrinking. According to the cable joint manufacturing method, the purposes of improving field intensity distribution at the high-voltage cable joint and the insulating property of a main insulating layer and prolonging the service life are achieved, the advantages of being high in targeting property, easy and convenient to operate and reliable in property are achieved, on-site operation technical personnel can easily handle the manufacturing method, and therefore the manufacturing efficiency of the operation personnel and the cable joint manufacturing quality are effectively improved.