The early symptoms of gastrointestinal tract are similar to those of dyspepsia and chronic gastritis or have no symptoms, which are: 1) heartburn, acid reflux; 2) stomach distension, stomach pain, diarrhea, constipation; 3) stool deformation, slight blood in stool; 4) indigestion, belching; 5) obstructive sensation in swallowing; 6) frequent hiccups, epigastric discomfort, similar to chronic gastritis, and slight difficulty in swallowing; 7) malaise, epigastric discomfort, similar to chronic gastritis, and progressing to middle and advanced stages. The symptoms are similar to those of chronic gastritis and dyspepsia, and progress to the middle and late stages with typical symptoms, such as weakness, emaciation, loss of appetite, weight loss, lymph node enlargement, etc. Maintain good habits of life, diet and optimism.