Water bath system

The utility model relates to a water bath system which comprises a water bath device, the water bath device is provided with an inner cavity used for containing liquid, a reaction container used for containing liquid medicine is arranged in the inner cavity, and a heat exchange pipe used for heat exchange and a temperature control device are arranged between the reaction container and the side wall of the inner cavity. A liquid inlet and a liquid outlet of the temperature control device are respectively communicated with the heat exchange pipe through pipelines to form a circulation loop, and the temperature control device is used for controlling the temperature of circulating liquid in the heat exchange pipe; the water bath system provided by the utility model is compact in structure and reasonable in design, can effectively control the temperature of the liquid medicine in the etching process, achieves the purpose of constant-temperature water bath, not only enables the etching rate to be controllable, but