At the stage when obesity starts to explode many people will not pay attention to its harmful effects; there are also many people who think that obesity is just a difference in body shape until they lose their health. Obesity however can cause: hyperglycemia, hyperlipidemia, coronary heart disease, diabetes, sleep apnea syndrome, hyperuricemia, hyperinsulinemia (this is the former diabetic), estrogen secretion, etc. Also polycystic ovary syndrome and obesity are mutually causal. Obesity is exacerbated by polycystic ovary syndrome and obesity exacerbates the symptoms of polycystic ovary syndrome. These diseases are collectively referred to as metabolic syndrome. Meanwhile, the tumor rate of obese people is 3-4 times higher than that of normal people, and obesity is now considered a precancerous lesion. Although surgery can effectively relieve diabetes and effectively reduce weight. But after all, it is also the last line of defense. Timely weight control and change of eating habits is the effective way to control weight for a lifetime. Some previous survey data show that China has been the second most obese population in the world, and the United States is the first. Now China’s obese population has risen to the first place. Is there really such a large obese population in China? Of course there is a population base problem. China’s population is more than 1.3 billion, while the U.S. population is only 300 million, put this data into the country to see, the U.S. obese population should be higher than China. In addition, the United States still ranks first in the world in the population of severe obesity. Of course, the data also has some relationship with the difference of statistical caliber. But the obesity problem is indeed a very serious problem facing China. The 2015 Report on the Status of Nutrition and Chronic Diseases among the Chinese Population, released by the Chinese National Health Planning Commission in June 2015, also acknowledges that the problem of overweight and obesity among the Chinese population is prominent. The growth of overweight and obesity in China is higher than in developed countries, both for adults and adolescents. Twenty to thirty years ago, almost no one in China was overweight, but between 2005 and 2011, the number of overweight people increased fourfold. Today, obesity in China accounts for 5% of the total population. Twenty percent of overweight people live in large cities, and overweight is especially common among boys from high-income and well-educated families. The survey shows that the fattest people in the world live in the Pacific island nations of Polynesia and Micronesia. There, 38% of men and more than half of women are obese. Nearly one-fifth of the world’s obese people live in the six high-income countries, namely the United States, the United Kingdom, Ireland, Australia, Canada and New Zealand. They prefer to eat fast food or frozen food. Recently, the well-known medical journal “The Lancet” published a global adult weight survey report, scientists in 40 years of 19.2 million surveyed adults body mass index (BMI) trend research found that the number of fat people in the world has exceeded the number of thin people, and China’s obese population than the United States in the first place. Body Mass Index (BMI – Body Mass Index) is a reference index to assess height to weight ratio. It is calculated by the formula: weight (kg) divided by the square of height (m). BMI is an index closely related to total body fat and mainly reflects generalized overweight and obesity. Since BMI calculates the proportion of body fat, it is more accurate in measuring the body’s risk of heart disease and hypertension due to being overweight than if it is determined by weight alone. The clinical definition of obesity varies from country to country, but generally a body mass index of more than 30 is considered obese, more than 35 is severely obese, and less than 18.5 is underweight. The study, led by scientists at Imperial College London, showed that between 1975 and 2014, the obesity rate for men tripled and more than doubled for women.