Gastric tube should be pumped back with brown liquid, and samples should be kept and sent for examination to check whether the occult blood test is positive, and temporary fasting treatment should be given. If there is brown liquid in the gastric tube, firstly, exclude whether there is brown food; secondly, consider the situation of gastrointestinal bleeding, and clarify whether there is stress peptic ulcer or other causes of gastrointestinal bleeding. Temporary fasting treatment, drugs to inhibit gastric acid secretion, protect the gastric mucosa and strengthen the parenteral nutrition, pending the return of occult blood test results, according to the amount of bleeding and blood pressure to determine the need for gastroscopy, if necessary, given to the hemostatic drugs and saline flushing gastric tube. It is recommended to report to the doctor at the first time when brown liquid is found in the gastric tube, and further treatment should be carried out under the doctor’s guidance, so as to avoid worsening of the condition caused by negligence.