Abstract: Meal replacement foods are not only high in fiber, low in calories, easy to fill, but also very effective in adjuvant treatment of obesity and diabetes. It can reduce weight and body fat percentage, improve blood glucose and sugar metabolism in obese type 2 diabetes level, and the current product research results are relatively rich, which have a broad market development prospects. This paper systematically summarized the development background, functions and research and development products of the meal replacement food, analyzed the problems existing in the current research, and put forward reasonable suggestions, which was intended to provide reference for the future regulation and development of the meal replacement food system.