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The invention relates to the technical field of pet food processing, and particularly provides a protein-lipid compound oil gel coating composition which comprises the following components in parts by weight: 60-70 parts of egg yolk oil; 10 to 20 parts of eggshell membrane peptide; 5-10 parts of medium-chain fatty acid; 0.1 to 0.5 part of vitamin E; 10 to 15 parts of ethyl cellulose; and 2-5 parts of nano silicon dioxide. Egg oil is used as a substrate, an oil gel three-dimensional network is constructed, eggshell membrane protein is integrated into lipid, and precise function delivery of joint and fur health is achieved. The solid coating is stable in structure and high in oxidation resistance, can be firmly attached to the surface of the pet food, effectively prevents grease oxidation and leakage, and remarkably prolongs the shelf life and improves the additional value of the product.