Gastrointestinal disorders often have certain uncomfortable reactions or even typical symptoms before they develop or before they are clearly diagnosed. However, because of their commonness and prevalence, they are often easily overlooked until they are so severe that they cannot be delayed any longer before they go to the doctor. In order to facilitate the early detection and diagnosis of gastrointestinal disease, the early signs of gastrointestinal disease are listed below for reference, self-examination, early detection and early treatment. A belching, erratic: belching and erratic is different. Belching sound “burp – burp – -” loud, dull and long, the interval is also longer, the gas from the stomach up; and erratic sound “er, er, er” loud, sharp and rapid, gas from the throat, accompanied by trunk vibration and shrugging. Belching and eructation are common symptoms of various gastrointestinal diseases, especially chronic gastritis, peptic ulcer and functional dyspepsia, and require examination when necessary. Nausea and vomiting: Nausea and vomiting are commonly associated with acute chronic gastritis, peptic ulcer, pyloric obstruction and other diseases. Gastroscopy, hepatobiliary ultrasound examination, and blood sampling for electrolytes, liver function, kidney function, etc. should be performed if necessary. Third, abdominal distension, abdominal pain: abdominal distension is the accumulation of gas in the gastrointestinal tract, often accompanied by belching, excessive exhaustion, nausea and other symptoms, can be triggered by a variety of causes, gastrointestinal inflammation, peptic ulcer, etc. can cause abdominal distension. Abdominal pain has many causes and complex manifestations. Among gastrointestinal diseases, acute gastroenteritis is mostly manifested as acute abdominal pain; chronic gastritis, peptic ulcer, ulcerative colitis, etc. are mostly chronic abdominal pain. If there is abdominal account, abdominal pain, should be under the doctor’s advice, choose electronic gastroscopy, colonoscopy and B ultrasound examination, especially acute abdominal pain should be timely consultation, in order to exclude acute abdominal disease. Constipation: Constipation can be divided into functional constipation and organic constipation. Functional constipation is often due to diet, lifestyle habits, drugs and other reasons, while organic lesions on the gastrointestinal tract itself, should be examined by anorectal finger examination, colonoscopy. V. Diarrhea: Diarrhea can be divided into acute and chronic, more than 2 months for chronic diarrhea. Acute diarrhea can be seen in infections or poisoning caused by enteritis, acute attacks of ulcerative colitis, etc.. Chronic diarrhea can be seen in acid deficiency diseases such as chronic atrophic gastritis, as well as in non-infectious diseases of the intestine such as ulcerative colitis, and in some other factors. If there is no obvious cause, those who have long-term chronic diarrhea or acute diarrhea with mucus, pus and blood or accompanied by severe abdominal pain need to choose e-colonoscopy, ultrasound and other tests under the advice of doctors.