Abstract: Provided is a liquid-cooled charging device, relating to the technical field of vehicle charging. The liquid-cooled charging device includes a charging base, a cooling assembly, and at least one wiring terminal. The cooling assembly has a cooling flow channel and at least one mounting hole. The cooling flow channel is formed inside the cooling assembly and surrounds the at least one mounting hole. The least one wiring terminal has an end inserted into the charging base and another end inserted into the at least one mounting hole, enabling the at least one wiring terminal to be cooled by the cooling assembly. A charging gun is also provided.