It is widely used in various fields of the national economy such as ships, automobiles, machinery manufacturing, and construction, and it involves almost every corner of people's daily life. In 2009, my country's paint output has leapt to the world's number one, becoming a veritable paint producer and consumer. With the expansion of coating applications and the improvement of people’s awareness of health and environmental protection, the safety of coatings has become more and more important to people. Laws, regulations and standards have been issued at home and abroad to control the use of various hazardous substances in coatings, including toxic and harmful elements. The impact on human health and the environment has been widely concerned and studied. Harmful elements in the paint are in direct contact with the human body during the use of the paint, and enter the human body through the food chain after being bio-enriched, and accumulate in the human body, causing people to be poisoned to varying degrees. For example, lead can cause damage to the hematopoietic system and nervous system of the human body, and is more harmful to the health and intellectual growth of children. Hexavalent chromium can destroy the normal function of the enzyme system and cells, and arsenic has a significant accumulation effect in the human body. , Resulting in organ damage and so on.