The system can be: forward flow, cross current and counter current evaporation process, the effect number is single effect or multi effect, according to different material characteristics, different evaporation process and equipment materials are adopted to realize continuous feeding, continuous discharging and semi-automatic management. It is suitable for concentration of corrosive and heat sensitive materials such as dilute sulfuric acid, ammonium sulfate, waste liquid, hydrochloride, biochemical engineering, etc.