The old Bai has always been in good health, but in February last year began to bleed in the stool, and after a month did not improve, then to an outpatient clinic, doctors have diagnosed hemorrhoids and enteritis, and the relevant treatment. Five months later, Bai’s condition got worse, so his family sent him to a large hospital, where he was diagnosed with advanced rectal cancer after colonoscopy… Gastrointestinal cancer is not uncommon in life, among which gastric cancer is highly prevalent among people aged 45 to 55, and its incidence and mortality rate take the first place among malignant tumors; intestinal cancer is highly prevalent among people aged 40 to 50, and its incidence rate takes the third place among malignant tumors. Symptoms of GI cancers are very vague, such as constipation, diarrhea, blood in stool, etc., which are often encountered in life and always treated as other diseases, thus dragging on and on and becoming advanced. Is there any way to detect and eliminate these serious threats to human health at an early stage? Gastrointestinal endoscopy may be able to help you. Gastroscopy is a slim and flexible endoscopic hose with a camera device is inserted into the patient’s digestive tract, and the lesions of the digestive tract mucosa are clearly observed with the help of a TV screen, and the disease is detected visually, just like sticking a camera into the stomach. Not only that, the gastroscope can also remove suspicious intestinal tissues for direct examination. Gastroscopy is divided into gastroscopy and enteroscopy, in which the gastroscope enters through the mouth and explores the esophagus, stomach and duodenum, while the enteroscope enters through the anus and can “search” the entire intestinal cavity. Early detection of malignant lesions in the stomach and intestines can change the fate of patients and make gastric and intestinal cancers completely curable. In Japan, gastrointestinal endoscopy can detect at least 50,000 cases of early gastric cancer and 15,000 cases of early intestinal cancer every year, and the 5-year survival rate of such patients can be over 95% with simple endoscopic surgery and conventional surgery, and the 5-year survival rate of mucosal cancer can be 100%. The situation is different in China, because endoscopy is not yet included in the routine health checkups because of the cost and other reasons, and people are not aware enough of spending money on gastroscopy to check diseases, so the detection rate of early gastric cancer is extremely low in China. A large number of gastric cancer patients miss the opportunity of early detection, which greatly affects the curative effect and prognosis of gastric cancer. In any case, gastroscopy is the most effective method to diagnose gastrointestinal tumors and precancerous lesions. Therefore, regardless of whether people have symptoms or not, it is recommended that they should have their first colonoscopy at the age of 50 and every 3-5 years thereafter; if conditions really do not allow it, they should also have a test to see whether there is occult blood in the stool and then have further tests if problems are found, so as to facilitate early detection and early treatment. In the following cases, colonoscopy must be done as early as possible: ① abdominal pain, abdominal distension, abdominal masses can be felt; ② frequent abdominal discomfort, hidden pain, recurrent irregular bowel movements, diarrhea, constipation, mucus stool or blood in the stool; ③ after surgery for cancer in other areas, gastrointestinal symptoms have appeared for a long time; ④ after surgery for colorectal cancer and colorectal polyps; ⑤ more than 10 years after cholecystectomy; ⑥ patients with definite rectal or sigmoid colon cancer Patients, a full colonoscopy should be done to see how many lesions are present. Gastroscopy is extremely necessary for the following people: ① those who are over 40 years old and have bad eating habits (e.g. smoked or pickled food); ② those who are over 40 years old and have a history of atrophic gastritis and have not undergone gastroscopy for more than two years; ③ those who are over 50 years old and have any upper abdominal discomfort; ④ those who have lost more than 3 kg in two months for unknown reasons; ⑤ those who have a family history of gastric cancer; ⑥ those who should undergo gastroscopy every year from the fifth year after gastric surgery (6) Those who should undergo gastroscopy every year after the fifth year of gastric surgery; (7) Those who have found gastric polyps and other benign tumors and have not undergone gastroscopy within two years after endoscopic treatment; (8) Those who are considered by the doctor to be in need of gastroscopy.