This device is suitable for recovery of alcohol in the fields as pharmaceutical, food, light and chemical industry etc., which can benefit to reduce production costs and increase economic benefits. This device can distil 30°-70°thin alcohol to 90°-95°. The alcohol degree of the finished product is high. It can increase reflux ratio, but finished output will be lowered correspondingly. Alcohol content of the remains is ≤3%. This device adopts high-efficiency stainless steel ripple packing. The parts that are in touch with alcohol, such as tower body, condenser, tank, cooling pipe etc., adopt SUS304 stainless steel, to prevent finished alcohol against pollution. The tower still adopts removable U-shaped pipe to heat, easy to clean the heating outer wall and the inner wall of the still.