▎ 摘　　要

NOVELTY - The utility model claims a graphene-based constant temperature fish tank, comprising a fish tank and a processing water tank; the fish tank is connected with the processing water tank by a water conveying pipe; wherein: the outer side of the water conveying pipe is covered with a heating pipe; the heating pipe comprises an electric heating layer; an inner insulating layer and an outer insulating layer; the electric heating layer is set between the inner insulating layer and the outer insulating layer; the electric heating layer comprises a graphene film set on the insulating base material; two free ends of the graphene film is provided with a wiring terminal; the wiring terminal is connected with the power supply; the voltage of the power supply is not higher than 36V . The constant temperature fish tank is heated by graphene film; it has controllable temperature; it does not need high pressure; the heating water temperature is suitable for fish survival.