Prevent blood in the stool when the weather turns cold! When faced with the sudden onset of blood in the stool, both prevention and treatment are important. Acute blood in the stool is one of the common emergency department diseases, mostly caused by diseases of the digestive tract itself, but also by diseases of the adjacent organs of the digestive tract, such as inflammation or tumors of the intestines, anus, liver, pancreas, and bile, etc. can cause bleeding in the digestive tract, and a few are due to systemic diseases causing local bleeding in the digestive tract. For example, certain hematological diseases, replete anemia, hemophilia, etc. Also, chronic kidney disease with uremic phase, heart disease combined with severe heart failure, cerebral hemorrhage, encephalitis, intestinal diverticulum and other diseases have the possibility of gastrointestinal bleeding. If there are any of these patients in your family, you should be especially alert to the occurrence of gastrointestinal bleeding. Winter and spring are high seasons for blood in the stool. Inadequate diet, excessive fatigue, increased internal exertion, increased cardiac bleeding, increased venous blood return, and elevated portal pressure can all cause blood in the stool. Patients need to be reviewed regularly and treated promptly when a new bleeding risk is detected to avoid rebleeding. If there is a lot of bleeding and the patient is not sent to the hospital in time, the patient should be consoled to lie still immediately to eliminate his nervousness, pay attention to keeping the patient warm, keep him lying on his side, take the head low and foot high position, and can put pillows on his feet at an angle of 30 degrees to the bed, which is conducive to the return of blood from the lower extremities to the heart and ensure the blood supply to the brain first. The patient’s blood in the stool should be roughly estimated in total, and it is best to use a cell phone or camera to take pictures of the bleeding so that the doctor can view it.