Infants and young children usually start to add complementary foods after 6 months of age. Newborns can gradually add complementary foods 6 months after birth. 6 months from the beginning of the eruption of milk teeth, the mouth has the ability to bite, chew, swallow non-liquid food, neuromuscular coordination continues to develop; infants have the ability to appreciate different colors, shapes, tastes of food; intestinal digestion and absorption capacity will soon be enhanced; the kidneys to improve the ability of excretion. When infants and toddlers have better chewing and swallowing ability after 6 months, try to feed solid food. Should be fine and soft semi-solid food to start, with the baby teeth eruption, chewing and swallowing ability to enhance, food gradually thicker. If you feed vegetables and other foods, you can start with vegetable soup, to fine vegetable puree, coarse vegetable puree to boiled chopped vegetables, shredded vegetables, vegetable pieces, to larger children and adults eat the whole vegetable. Infants and young children, even if they have a few milk teeth, the ability to bite and chew is still poor, so the food containing more crude fiber and the food that can not be crushed must be chopped, boiled, studied before feeding infants and young children. When making infant diet, generally should not put salt or add monosodium glutamate (MSG), baby food should be light, salt not only increase the burden on the kidneys, too much salt intake since childhood, is not good for health. It is also inappropriate to consume stimulating seasonings such as coloring, saccharin, etc. and preserved foods.