Salivary secretion increases when the infant is 4 months old, and the enzymes in the saliva and intestines are gradually able to digest starchy foods. At the same time, the nutritional needs of infants in this period also increase, and milk alone can no longer meet the needs of infants. At this time, some starchy foods can be added appropriately, such as thick rice soup and rice flour. The cereals added in the early stage of infancy are preferably rice products because some infants are allergic to the gluten in wheat foods, which can easily cause diarrhea, so it is best to wait for infants to be older before adding wheat foods. However, rice is easy to cause constipation, if found constipation, should be changed to feed oatmeal porridge. After the baby has adapted to rice, then slowly add other kinds of cereal baby food. Only feed one kind at a time. When your baby starts teething, you can feed him lightly toasted bread or baby cookies. Most of the cereal products available in the market are in powder form, such as the commercially available baby powder, iron protein baby powder, baby cake, etc. Their protein content is less than 12%. Their protein content is less than 12%, which can provide more carbohydrates and increase calories, and are best mixed with fresh milk or dairy products. Calcium cookies, iron cookies, nutritious wheat rings, etc. can be eaten directly after crumbling with water and milk. The amount of calcium, iron, zinc and vitamins A, D and B contained in one cookie can satisfy 1/2 of a day’s supply for infants and young children, which is a kind of weaning aid with high nutritional value. Cereals for infants are usually carefully processed and have very little nutritional value without the addition of iron and other vitamins. If your family has a wheat or corn allergy, you can replace it with rice or oats and try wheat later, or add a little mashed banana to his new food to make it more palatable. Corn should not be given in the beginning, as it is covered with a thick, large skin. It is best not to add starchy complementary foods too early, because infants before 4 months due to minimal salivary secretion, salivary amylase enzyme activity is very low, and the activity of pancreatic amylase in the small intestine to digest starch is also very poor, the digestion of starchy foods at this stage is weak, at this time, such as the addition of starchy foods, it will lead to indigestion in infants. In addition, adding starchy food too early will also affect the absorption of other nutrients in milk, such as calcium and iron. The proportion of infants with rickets is higher when starchy foods are added too early, because the high phosphorus content of grains changes the good calcium-phosphorus ratio in the infant’s original food, resulting in a decrease in the absorption of calcium, which affects the development of the infant’s bones. In addition, too much starchy food reduces the proportion of protein intake, and the child tends to grow fat but lose body mass. Spoon-feeding cereal to infants can exercise the coordination of the mouth and tongue. The thinner the complementary food, the easier it is for infants to absorb it, and it is best to add 4-6 tablespoons of water to one tablespoon of cereal, with the amount of water added decreasing as the age of the month increases. Many infants prefer plain tofu, which has no harsh flavors. It can be cut into small cubes and allowed to be eaten by the infant in a fun and nutritious way. It tastes even better when mixed with other familiar foods. When complementary foods are first introduced, feed one meal a day, and after feeding several different cereals, begin to add fruits, still one at a time. Meat should be added after 6 months because it is difficult to digest. When making complementary foods for infants, the following order should be followed, first feed a single cereal such as batter, then vegetables and fruits, and then add meat, this order is to follow the law of the development of the infant’s digestive and absorptive functions. Foods for infants and young children are basically divided into four categories: milk and milk products, vegetables and fruits, rice and other cereals, eggs and meat. When the baby gradually adapts to cereals, each meal or daily food should try to include the above four food groups in order to make the baby’s nutrition more balanced. Parents should understand that when children are exposed to new foods, it is also the beginning of the development of dietary habits. Developing good dietary habits for children from an early age is crucial for their future healthy growth.