The basic treatment for intestinal obstruction is gastrointestinal decompression, which means that a gastric tube is lowered through the nasal cavity, and is a very effective medical measure for conservative treatment, so it is recommended that a gastric tube should preferably be inserted. In intestinal obstruction, there will be varying degrees of gas and fluid accumulation in the stomach and intestine at the proximal end of the obstruction, leading to dilatation of the intestinal canal and the formation of multiple gas and fluid planes. The placement of a gastric tube may cause nausea and discomfort, but it will be very effective in relieving the pressure in the gastrointestinal tract and preventing intestinal damage from the obstruction, while for conservative treatment that is ineffective, surgery is required to relieve the obstruction, and postoperative placement of a gastric tube for observation is also often required to prevent the formation of another obstruction early after surgery.