Breast milk is the best nutrition for babies, it can fully meet the growth and development needs of babies before 4 months, usually babies 1-3 months, only need to drink a small amount of vegetable juice, fruit juice, supplement some vitamins, do not need any complementary foods, in fact, many infants can not adapt to add complementary foods for them too early. Adverse effects of adding complementary foods too early (before 4 months of age): 1. cause vomiting and diarrhea, as infants are not yet capable of digesting the added complementary foods; 2. the consequences of complementary foods replacing breast milk, resulting in inadequate nutrient intake by infants, may occur; 3. overfeeding may also occur, and infants may become overweight. Learning to eat complementary foods is a new attempt for infants, not only can they obtain more nutrients, stimulate the development of teeth and mouth, and train the function of chewing and swallowing, but it is also the starting point for infants to step onto a new growth ladder. Too late to add complementary foods (after 6 months) adverse effects: 1, will lead to infants do not get the required nutrients, hindering growth and development, malnutrition and micronutrient deficiencies in the consequences; 2, is not conducive to promoting the growth and development of the potential to play; 3, the impact of exercising the infant’s oral cavity muscles and the tongue’s movement opportunities, is not conducive to the future of the language development and the cultivation of the important process of good dietary behavior; 4, may occur in favor of food, Picky eating, food refusal and other eating behavior problems; later learning performance, interpersonal communication, social behavior and other social adaptability may be affected. Grasp the best time to add General from 4-6 months can be added to the baby complementary food. Mixed or artificially fed babies can add complementary foods after 4 months, while exclusively breastfed babies have to be added later, but the growth and development of each baby is different, and individual differences are also different, so the time to add complementary foods can not be generalized. The following information is for parents’ reference: 1. Whether the infant’s weight is sufficient, whether the development is mature, and whether the tongue stretching reflex has disappeared The infant’s weight needs to be twice that of the birth weight, and at least 6 kg. Infants can control their head and upper body, can sit holding on or leaning against each other, can hold their chests up, and can hold their heads up. Infants can indicate that they want to eat or don’t want to eat by turning their heads, tilting them forward, tilting them backward, and so on, so that force-feeding won’t happen. Many parents have found that when they first feed their babies complementary foods, he often spits out what he has just fed into his mouth, thinking that it is because the infant does not like to eat. In fact, the baby this tongue out performance is a kind of instinctive self-protection, known as the “tongue out reflex”, that feeding complementary food is not yet time. The tongue reflex usually does not disappear until around 4 months of age. If you insist on feeding complementary foods before the disappearance of the hard stuffing, hard to feed, not only the parents are very frustrated, so that the baby also feel unhappy, is not conducive to the cultivation of good eating habits. 2, whether the infant has the performance of not eating enough, whether with the behavior of wanting to eat For example, the baby was able to sleep all night until dawn, but now often cry in the middle of the night, or sleep time is getting shorter and shorter; the number of times a day breastfeeding increased to 8-10 times or feeding formula 1000 ml, but the baby is still in the state of hunger, a moment of crying, and a moment of wanting to eat. When infants experience growth acceleration around 6 months of age, it is the best time to start adding complementary foods. Whether the infant has the behavior of wanting to eat. If he is interested when others are eating next to him, he may also come to grab your spoon and grab chopsticks. If the infant shoves his hand or toy into his mouth, it means he is interested in eating.