The invention relates to an enamel tank which comprises a tank body for storing enamel melt. An enamel filling opening is arranged on the tank body, an enamel level measuring device is arranged on the tank body and comprises a float ball, a movable rod and a travel control switch, the float ball can be suspended in the enamel melt in the tank body, one end of the movable rod is connected with the float ball, the travel control switch comprises an upper travel switch and a lower travel switch, and the other end of the movable rod can be in contact with the travel control switch. When the float ball ascends to an enamel-full altitude, the movable rod is in contact with the upper travel switch, and at the moment, enamel melt is prevented from being filled into the tank body; and when the float ball descends to an enamel-empty altitude, the movable rod is in contact with the lower travel switch, and at the moment, enamel melt is allowed to be filled into the tank body. The enamel tank is provided with the enamel level measuring device, so that functions of a pure enamel tank are increased, the enamel filling automation degree is increased, and the enamel tank is simple in structure, low in cost and applicable to various places.