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Walnut cake and meal was a protein energy feed raw material with rich nutritional value and few anti-nutritional factors. Under the premise of ensuring amino acid balance, walnut cake and meal can improve meat quality, improve the growth performance of livestock and poultry, and effectively alleviate the shortage of traditional conventional feed raw materials in animal husbandry industry. In order to systematically understand the research status of walnut cake and meal in livestock and poultry feed at home and abroad and the effective utilization of walnut cake and meal in livestock and poultry feed in the future, the yield and nutritional status of walnut in China, the feed composition, nutritional value, toxic and harmful substances of walnut cake and meal and the research progress in ruminant, pig and poultry feed at home and abroad were reviewed. [ABSTRACT FROM AUTHOR]