Gastrointestinal bleeding judgment methods, as follows: 1, the degree of bleeding assessment: adults with daily bleeding greater than 5ml, appear positive fecal occult blood, greater than 50m appear black stool; such as the accumulation of blood in the stomach greater than 250ml, appear vomiting blood; bleeding greater than 400ml, appear dizziness, palpitations, weakness, etc.; bleeding greater than 1000ml in a short period of time, for gastrointestinal bleeding, can appear shock; 2, peripheral circulation Failure to judge: when gastrointestinal bleeding is not excluded in time, blood volume can be judged by observing the state of blood circulation, such as the presence of postural hypotension, suggesting insufficient early circulating volume, when the flat position is changed to sitting or standing position, fainting can occur when standing, and standing position is not taken; 3. Judgment of whether the bleeding has stopped: the presence or absence of black stool cannot be used as an indicator of whether upper gastrointestinal bleeding has stopped; the gastrointestinal tract should be considered still active bleeding, repeated vomiting of blood or black stool; the state of peripheral circulation failure is not significantly improved after adequate rehydration and blood transfusion; hemoglobin count and blood cells continue to drop; elevated blood urea nitrogen occurs with normal amount of rehydration and urine volume.