Obesity is predicted to be the epidemic of the 21st century and the number one killer of human health. This is the latest news coming from the international conference held in our country in October 1999. When discussing this worldwide health problem, the experts mentioned the new understanding of obesity standard, and believed that Europe, America, Asia and China should have their own different obesity standard due to the difference of human race and living environment. Therefore, the world common obesity standard currently used is not really “common”. A, the world obesity standard At present, the world uses the weight refers to Lou (BMI) to measure a person fat or not fat. The calculation method is: BMI = weight (kg) ÷ height (square meters). The world standard drawn up by the World Health Organization is that BMI is in the normal range at 18.5-24.9, BMI greater than 25 for overweight, BMI greater than 30 for obese. However, experts at the meeting pointed out that this weight standard is based on white people in Europe and the United States as the benchmark, not necessarily applicable to Asians. Second, Asian obesity standards Asian people’s body size is small, with BMI18.5-24.9 of the world “normal range” weight standards to measure, it is not suitable. For example: the Japanese when the BMI is 24.9, hypertension risk has increased three times; in the United States of the Japanese, BMI greater than 23 when the risk of cardiovascular disease began to increase significantly; Hong Kong area of Chinese people, BMI in 23.7 when the mortality rate is the lowest, and then high when it began to rise. This shows that the world standard of 24.9, the upper limit of normal body mass index, is obviously too high for Asians. So, what should be the standard of obesity for Asian people? Experts believe that BMI in 18.5-22.9 is the normal level, BMI more than 23 for overweight; BMI more than 30 for obese. In this way, the upper limit of the normal body mass index of Asian people is 2 indices lower than that of European and American people, and the difference is not that big. Third, China’s obesity standards China experts believe that, although China belongs to the Asian species, but the upper limit of the normal range of body mass index should be lower than the Asian standard, in the specific use of body mass index to judge following and not fat should be treated differently. Because China’s obesity has two main characteristics: small body size, small index; belly big, big harm. Small body size determines the normal upper limit of the body mass index to be lower. A survey for China shows that Chinese people with BMI greater than 22.6 have higher average blood pressure, blood sugar and triglyceride levels than those with BMI less than 22.6, while the beneficial high-density protein cholesterol level is low. Therefore, experts believe that the upper limit of normal BMI for Chinese people should not be greater than 22.6, and should be lower than 24.9 in Europe and America and 22.9 in Asia. Some experts suggest that the best value of Chinese people’s body mass index should be 20-22, BMI greater than 22.6 for overweight, BMI greater than 30 for obese. A large proportion of abdominal obesity is the characteristic and potential danger of obesity in Chinese people. National people’s body mass index more than 25 than then is significantly smaller than Europeans and Americans, but the proportion of abdominal obesity is larger than Europeans and Americans. The study found that the body mass index is normal or not very high people, if the abdominal circumference of men greater than 101 cm, women greater than 89 cm, or waist / hip ratio of men greater than 0.9, women greater than 0.85 abdominal obesity, the harm is as great as the high body mass index. This reminds people in the judgment of fat and not fat and the harm is big, not only to pay attention to the index of high and low, but also to measure the thickness of the waist circumference, because China has its own unique fat law.