Food-grade coatings play a crucial role in the modern food processing and packaging industries. They possess characteristics such as being non-toxic, odorless, and free of harmful migrating substances. While ensuring food safety, they can also provide good protection for food-contact surfaces. From food storage tanks to packaging materials, food-grade coatings ensure the quality and hygiene of food, effectively prevent metal corrosion and the leaching of chemical substances, and prolong the shelf life of food. Their research, development, and production follow strict standards and regulations and need to undergo multiple tests, such as those for corrosion resistance, water resistance, adhesion, and the determination of the amount of chemical substance migration, to meet the requirements of food safety regulations and safeguard consumers' health. They are indispensable and important materials in the food industry.