Nursing check-ups for gastrointestinal bleeding are very important for the following main purposes: firstly, to observe whether there is continued bleeding. Second, to observe the amount of drainage from various drains, the texture of the drainage, and whether there is blood. Third, to observe the changes of heart rate, pulse, blood pressure and pulse oxygen of the bleeding patient, whether there is a drop in blood pressure and whether the heart rate becomes faster. Fourth, observe the patient’s mental status, whether there is irritability, nervousness, cold sweat, etc. Fifth, observe the urine volume, the color of the patient’s urine, including the volume of urine. Sixth, observe the patient’s pulse oxygen and other conditions. Seventh, observe the patient’s central venous pressure, you can measure what the central venous pressure is. Normally it is 5-10cm water column, observe whether it is low or high, and indirectly determine whether the blood volume is insufficient and whether there is rebleeding. Also observe the patient’s other vital signs.