The standard weight for women is calculated mainly based on height, which is a normal value range, not a fixed value. At present, there are two algorithms commonly used for standard weight, according to the body mass index measurement is more accurate, the calculation of standard weight need to exclude the muscular or body water retention factors, because the weight of this part of the population beyond the calculated value can not simply be considered overweight or obese: 1, according to the height calculation: according to the World Health Organization standards, the standard weight of women: weight (kg) = [height (cm) – 70]*0.6. Rough algorithm for weight (kg) = height (cm) – 105, weight in the calculated standard weight fluctuation of 10% range are normal; 2, according to the calculation of body mass index: body mass index (BMI) = weight (kg) / height squared (m^2), China’s standard that BMI value in the range of 18.5-23.9kg/m^2 is normal, with the BMI value of the The range of the BMI value and the square of height multiplied, the result is the standard weight range, the calculation value appears too high or too low may indicate unhealthy. It is important to note that these calculations are for adults, but children and the elderly are not suitable for these formulas. Generally, it is considered that 20% above standard weight or BMI ≥ 28kg/m^2 is obese, and 10% below standard weight or BMI < 18.5kg/m^2 is wasting. Adjusting weight through weight loss or nutritional supplementation to maintain good physical condition can reduce the occurrence of diseases.