Normal height and weight standards are generally judged by the body mass index (BMI), which is the weight divided by the square of the height, referred to as the body mass index. BMI can reflect the degree of body fat and thin and whether the health of the BMI in 18.5 to 23.9 for normal; BMI lower than 18.5 is thin; BMI higher than 23.9 is overweight; BMI higher than 28 is obese. When the BMI is lower than 18.5, the body may have problems such as decreased immunity, and should supplement high protein food in time and actively participate in sports. When BMI is in the normal range, it represents perfect body functions and should maintain the current healthy lifestyle. When the BMI is higher than 23.9, the body may have cardiovascular problems, joint problems, fertility problems, etc., and should improve the lifestyle in time and seek medical treatment if necessary. Each person needs to analyze the standard height and weight according to their own situation. If the BMI appears to be obviously abnormal, it is recommended to seek medical treatment in time.