According to the formula for calculating normal child weight, the height of 1-6 years old = age (years) × 7 + 75, the normal height of a 5-year-old child is about 110 cm. According to the “Reference Standards for Growth and Development of Children under 7 Years of Age” formulated by the Ministry of Health of China in 2021, the normal height of a 5-year-old boy is 98.7-124.7 cm, with an average of 111.3 cm, and the normal height of a 5-year-old girl is 97.8-123.4 cm, with an average of 110.2 cm. However, a child’s height is influenced by genetics, endocrine and the level of growth in the womb during the fetal period, so height does not fully reflect the child’s growth and nutritional status, and a short period of illness or nutritional fluctuations cannot easily affect a child’s height. Usually, a child’s height growth level can be used as one of the indicators to determine if there is an abnormal growth rate. It is generally accepted in medical science that a child’s height growth should be 6-7 cm per year after the age of 2. If the height growth is less than 5 cm per year after the age of 2, the growth rate is considered to be decreasing. In addition to height, factors such as weight and intelligence level can also determine whether a child has abnormal growth. During childhood, try to maintain adequate protein, vitamins, dietary fiber and minerals such as calcium, zinc and iron, such as milk, soy products, fresh vegetables and fruits. Make the child’s height development level basically maintain at normal level to avoid the situation of growth rate decline due to insufficient nutritional intake.