At present, two methods can be used to calculate the weight of the method, one is the World Health Organization standard according to the height of rough calculation of weight, 1.70 meters tall men weigh about 63Kg, women weigh about 60Kg; the other is based on the body mass index calculation, the normal weight range is 53.465Kg to 69.071Kg. 1. The World Health Organization has developed a rough calculation of body weight based on height, male weight (Kg) = (the difference between height in centimeters and 80) multiplied by 0.7, and female weight (Kg) = (the difference between height in centimeters and 70) multiplied by 0.6. This type of calculation can only roughly predict body weight, and is not an accurate way of interpreting it. 2. The most accurate calculation is based on the body mass index to calculate the normal weight range of 170 centimeters, China’s normal body mass index range is 18.5 to 23.9Kg/m2, body mass index = weight (kg) / height squared (m2), calculated weight range is 53.465Kg to 69.071Kg. Obese or thin people can seek professional fitness trainers or dietitians to develop a reasonable fitness program and diet.