The 13-month-old’s diet has transitioned from milk-based to complementary foods, and the simplest dietary formula can be a cereal, plus a legume as the basic mixed complementary food. The main food, as the main ingredient, should preferably be cereal, and protein-based complementary foods can be plant or animal proteins, such as legumes, dairy, meat, poultry, fish and eggs. Auxiliary foods for minerals and vitamins are a variety of freshly pureed vegetables and fruits, fresh bananas, oranges, apples, etc. Complementary foods that supply calories are fats, oils, and sugars to increase the caloric energy in the complementary food mix. Breast milk or cow’s milk, basically, can supply about 300-400ml per day. It is best to cook in a way that is simple, fuss-free and ensures the main nutrients are present. Making porridge or paste, for example, rice flour with fish puree or noodles with lean minced meat are good combinations. The ratio of cereals to beans, meat and eggs should be 3:1-2:1. children don’t like to eat too greasy food, vegetable oil is better than animal oil for cooking, you can add a small amount of seasoning, a little salt or soy sauce to improve the taste, you shouldn’t give children stimulating food, coloring, spices and monosodium glutamate (MSG) are not suitable.