The invention discloses a food coating for biscuits or mooncakes. The food coating is made from, by mass, 20-30 parts of condensed milk, 10-20 parts of white chocolate, 3-5 parts of green tea powder, 1-3 parts of soybean oil, 1-4 parts of xanthan gum, 1-2 parts of saccharose, 1-3 parts of fatty acid polyglycerol ester, 1-3 parts of isosorbide dinitrate and 1-2 parts of edible pigment. The food coating is low in production cost, safe and healthy, the raw materials are edible, the coating can coat the surfaces of most of biscuits or mooncake products, the original taste is not affected, the compact coating is formed on the surfaces of the biscuits or the mooncakes, on one hand, air can be isolated, the phenomenon that the taste is affected due to water absorption is avoided, the shelf life is prolonged, meanwhile, the food coating is bright in color and can coat the surfaces of biscuits or mooncakes to form various patterns, the appetite of people can be enhanced, and the ornamental value can be increased.