Gastric hemorrhage patients resume normal diet, the occurrence of diarrhea after eating lean meat considerations may be related to the combination of irritable bowel syndrome, dyspepsia, food poisoning and other factors. 1. Irritable bowel syndrome: It is considered to be the result of the interaction of many factors, such as visceral hypersensitivity, abnormal gastrointestinal dynamics, intestinal infections, intestinal micro-ecological imbalance, etc. Patients will experience diarrhea, abdominal pain, constipation and other symptoms, and some of the patients will experience diarrhea after eating lean meat. 2. Dyspepsia: the occurrence of this disease is related to gastrointestinal dyskinesia, Helicobacter pylori infection, increased permeability of the duodenal mucosa, decreased diastolic function of the stomach, etc. It can be triggered by factors such as inappropriate diet, mental stress, etc., leading to early satiety, diarrhea, reflux and other symptoms, which are manifested as diarrhea after eating lean meat. 3. Food poisoning: the cause of the disease is related to eating food with toxic substances, such as Escherichia coli, Salmonella spp., Aspergillus spp. and Staphylococcus spp. Common symptoms include diarrhea, nausea and vomiting. Therefore, if patients eat unclean lean meat, they are also prone to diarrhea symptoms. To sum up, when patients with gastric hemorrhage return to normal diet and have diarrhea after eating lean meat, they should go to the hospital in time to get medical treatment and clarify the specific causes under the guidance of professional physicians, and should not judge blindly by themselves.