The most precious thing in life is life, the preciousness of life lies in its irreducibility, each person’s life is only once, survival and health is the lowest level of human life needs, treat life with care and health is also a manifestation of the progress of the society, health is controllable. How to be considered healthy? As early as 1948, the World Health Organization pointed out that: “Health is not only the absence of physical disease and physical weakness, but should also be physiological, psychological and social adaptation to a good state”. At present, the physical discomfort is easy to attract people’s attention, and psychological and social adaptation on the bad often overlooked, in fact, its harm is not small, depression, anxiety, suicide, violent tendencies, etc. is the form of its expression. How can we stay healthy? The World Health Organization study pointed out that: among the factors determining health, genetic factors account for 15%, social factors account for 10%, medical factors account for 8%, the natural environment accounts for 7%, and lifestyle accounts for 60%. From this, we can know that genetic factors are passed on to us by our ancestors and cannot be chosen, social factors and natural environmental factors can be improved through the efforts of everyone, medical factors can be utilized, and the initiative to maintain good health lies in our own hands, that is, to establish a healthy and reasonable lifestyle. What is a healthy and rational lifestyle? Healthy and reasonable lifestyle means: balanced diet, abstaining from smoking and drinking, moderate exercise and good attitude. How to prevent and control digestive tract tumors? According to the research of Chinese Academy of Medical Sciences, at present, the first disease that causes the death of urban and rural residents is tumor, with a total prevalence of 247M100,000 people and a mortality rate of 149/10,000,000 people, which is obviously on the rise. The top 8 most common tumors are: stomach cancer, lung cancer, esophageal cancer, liver cancer, colorectal cancer, pancreatic cancer, breast cancer and cervical cancer. Digestive system tumors have 5 out of the 8 most common tumors. Jiangsu Provincial People’s Hospital in the first half of 2007, 10,000 cases of gastroenteroscopy, gastrointestinal malignant tumors detection rate of 8.2%, while the detection rate of ulcers and benign tumors is also as high as 35%, esophageal cancer for the youngest 17 years old, gastric cancer for the youngest 14 years old, intestinal cancer for the youngest only 9 years old. Current medical development has been able to achieve early detection and early treatment of tumors. Only with early detection and early treatment can we achieve better therapeutic effect. The most effective method for early diagnosis is gastroenteroscopy screening. At present, experts’ consensus is that gastroenteroscopy should be carried out as early as possible or on a regular basis if there are the following alarming symptoms: over 35 years old, people who have recently developed dyspepsia or vomiting, vomiting blood, black stools, blood in the stools, emaciation, fatigue, fever, jaundice, abdominal pain, diarrhea, change in bowel habits, masses, gastric ulcers, duodenal ulcers, chronic atrophic gastritis, intestinal epithelial hyperplasia, gastric polyps, atypical hyperplasia. Those who have gastric polyps, colon polyps, more than 10 years after gastrectomy, family history of digestive tract tumors.