The mixed defatting stove includes one stove body with a solvent inlet in the lower part and connected via a pump to a solvent storage device, a solvent outlet, a protecting gas inlet in the lower part, a gas exhaust port in the upper part, a solvent vapor inlet in the upper part and connected to solvent distiller, and has a heater on the side wall of the stove body, a blower on the upper part of the stove body to homogenize gas inside the stove, and an atomizer on the upper part of the stove and connected via a pump to a catalytic defatting acid storing device outside the stove body. The mixed defatting stove may meet the requirement of different defatting processes, including single or simultaneous solvent defatting, vapor defatting, condensed vapor defatting, catalytic defatting and siphonic defatting.