The invention relates to the technical field of medical appliances, and discloses a gastric tube for patients after gastrointestinal surgery. The gastric tube used for patients after gastrointestinal surgery includes a gastric tube body and a nasal cover, the gastric tube body includes a rolling device, the nasal cover includes thirty-eight air holes, a fixing device, a mounting device and a clamping device, the air hole is opened on the front of the nose cover, the right side of the rolling device is fixedly connected to the left side of the gastric tube body, the top of the installation device is fixedly connected to the bottom of the nose cover, and the fixing device includes the first A rope, a second rope, a cloth strip, a mouth, a first Velcro and a second Velcro, the right side of the first rope is fixedly connected to the left side of the nose cover. By setting the first rope, the second rope, the cloth strip, the opening, the first Velcro and the second Velcro, the stomach tube for patients after gastrointestinal surgery solves the effect of adhesive tape fixing the gastric tube bad question.