Intestinal obstruction is a common surgical disease in clinical practice. Patients with intestinal obstruction can have conservative relief of the symptoms of intestinal obstruction through intubation. Due to intestinal obstruction, the contents of the intestinal tract cannot be smoothly passed through the intestinal tube. During the process of conservative gastric tube insertion, care must be taken to avoid prolonged gastric tube insertion, which may cause ionic disorders in patients. During the process of gastric tube insertion, it is also necessary to pay attention to the ionic changes in the treatment and make appropriate supplementation, which is helpful to relieve the symptoms of intestinal obstruction.