Generally, hospitalization is required for 2 to 4 weeks after cardia relaxation surgery, and the exact duration can be adjusted according to the chosen surgical procedure, the patient’s physical condition and the condition of the patient. Cardia relaxation is a phenomenon in which the lower esophagus and gastric cardia lack muscle tone and the cardia relaxes due to temporary imbalance of neuromodulation, thus allowing gastric fluid to reflux into the esophagus. Endoscopic examination can find that the cardia is not closed tightly, and the cardia is not wrapped tightly with the mirror body when inverted mirror is seen. Cardia laxity can be treated with anti-reflux surgery, such as laparoscopic fundoplication, which aims to stop gastroduodenal contents from refluxing into the esophagus; patients with esophageal hiatal hernia can be treated with fowler’s surgery to repair the hernia opening and so on; patients with pancreatic cancer can be treated with endoscopic microtherapy, open surgery and so on. The postoperative hospitalization time of open surgery is relatively longer than that of minimally invasive surgery under thoracoscopy. The relatively lighter the patient’s condition and the better his/her physical condition, the faster the recovery time is, and the hospitalization time is relatively shorter.