In industrial wastewater treatment, the evaporator, as one of the core equipment, has long been plagued by fouling problems. Scaling not only reduces heat transfer efficiency and increases energy consumption, but also may cause equipment downtime or even damage, which directly affects the production efficiency of the enterprise. Suzhou Xinkunyuan Environmental Protection has been deeply cultivating the field of low-temperature evaporation for more than ten years, and has accumulated rich experience in the cause and prevention of evaporator fouling. In this article, we will review