All body indicators are one of the criteria to judge the developmental health of babies, but the most common and most intuitive are height and weight. By monitoring height and weight standards, we can monitor the growth and development of children, detect malnourished children early, guide parents to feed them scientifically and reasonably, promote the healthy growth of children, and thus reduce infant and child mortality. Generally, the height and weight of babies change as they grow older and have their own standards at each age. The height and weight standards for two-and-a-half-year-old babies are as follows: 1. The height standard for male babies is 88.9-95.8cm, and their weight standard is 12.1-15.3kg; 2. The height standard for female babies is 87.9-94.7cm, and their weight standard is 11.7-14.7kg. Because babies have different personal constitutions and growth curves, the specific development will not be exactly the same. However, as long as the intake of nutrients is adequate, there is usually no big difference. Once you find that your baby’s monitoring value is abnormally low or high, it is recommended to visit the relevant department in time to clarify the cause and then give targeted treatment. In addition, we should pay attention to rest and eat more meat, eggs, milk and other foods with high protein content to prevent our babies from having calcium, zinc and other trace element deficiencies, which may affect their normal growth and development.