Introduction: Spring has come, the cold has gradually receded, and the temperature has warmed up, but various germs have also begun to breed, and the baby's immunity is relatively weak, which may lead to diseases if you are not careful. So, how to supplement your baby's nutrition in spring? What are the rules?

First of all, add protein. Babies need more protein than adults. Protein is not only used to supplement the loss of daily metabolism, but also to meet the needs of new tissue growth. Generally speaking, children under 1 year-old need 2.0-2.5g protein per kg body weight per day for breastfeeding, 3-4g protein for breastfeeding and 3g protein for mixing breast milk and milk. For infants and animals with complicated diets, protein is half as good as protein. The infant's demand for protein can be calculated according to the daily demand of each person, and the daily calorie requirement of infants below 1 should be above 15%. If the baby lacks protein, it will affect the growth and development, especially the development of the brain, slow growth of weight and height, muscle relaxation, anemia, decreased resistance, and severe malnutrition and edema.

2. Adequate calcium and phosphorus can promote the growth and hardness of bone chromium and teeth. The calcium of infants accounts for about 0.8% of body weight, and that of adults accounts for 1.5%. Babies need about 600 mg of calcium and 400 mg of phosphorus every day. The ratio of calcium and phosphorus intake is 1: 1.5. This is related to their utilization rate. The proportion of breast milk is more suitable, so the number of breast-fed babies is obviously less than that of artificially fed babies. Too high or too low calcium and phosphorus will affect its absorption and utilization. Babies lacking calcium and phosphorus may suffer from rickets, tooth dysplasia, arrhythmia, hand and foot convulsions, abnormal coagulation and easy bleeding. When adding complementary food after 6 months, bean products, milk powder, eggs, dried shrimps and green leafy vegetables should be used more. Foods made from these raw materials, such as milk rice paste, milk corn porridge, egg noodles, bean noodles and minced beef, tofu, egg soup, amaranth water, etc. It is a good source of calcium and phosphorus.

Water is the most important part of human body and an indispensable nutrient. Metabolism and body temperature regulation in the human body can only be accomplished by water. With the arrival of spring, the baby grows fast, has a vigorous metabolism, has a large amount of activity, and has a great demand for heat energy and water. The daily weight is about 100- 150ml.