There is no direct link between blood donation and diarrhea and stool dilution, it is recommended that patients undergo a routine stool test to see if it is related to intestinal infections, if the infection is caused by the available anti-infective treatments, such as azithromycin, gentamicin, etc.; if the infection has nothing to do with the indigestion caused by the majority of dyspepsia, you can take domperidone, moxabepril, etc.. Patients with intestinal infections need to pay attention to daily dietary hygiene, regulate dietary structure, and take anti-infective drugs such as azithromycin and gentamicin to improve symptoms. Diarrhea related to dyspepsia can be improved by taking gastric stimulants such as domperidone and mosapride to improve digestive function and dyspepsia. There is no direct link between blood donation and diarrhea with loose stools, and medical attention is recommended when diarrhea occurs. Medication should be administered under the direction of a physician.