▎ 摘　　要

NOVELTY - The utility model claims a water circulating heat preservation bathtub, comprising a cylinder body; the side wall of the cylinder body is opened with a water inlet and a circulating water outlet connected with the water source; the bottom wall of the cylinder body is opened with a water outlet; further comprising a water circulating filtering device and a temperature control device; the water circulating filtering device comprises a water pump and a filter; the inlet of the water pump is connected with the circulating water outlet; the outlet of the water pump is connected with the inlet of the filter; the outlet of the filter is connected with the water inlet; the outer wall of the cylinder body is orderly coated with a waterproof coating and a graphene heating coating; the temperature control device is electrically connected with the graphene heating coating; the temperature control device adjusts the heating temperature of the graphene heating coating . graphene heating coating is coated on the outer wall of the cylinder body; the heat generated by graphene heating coating is transmitted to the cylinder body to heat or heat the water in the cylinder body; the temperature control device is electrically connected with the graphene heating coating; the temperature control device can adjust the heating temperature of the graphene heating coating so as to control the heating or heat preservation of the cylinder body; It satisfies the requirement of the user.