Cardia relaxation and cardia dystrophy are not the same disease, and they have different etiology, clinical manifestations, and treatments. Cardia relaxation refers to the lack of muscle tone in the lower esophagus and gastric cardia and relaxation of the cardia due to temporary imbalance of neuromodulation, which results in reflux of gastric fluid into the esophagus. Patients mainly show symptoms of reflux and vomiting. Cardia flaccidosis refers to the lack of peristalsis in the esophagus during swallowing, and poor relaxation of the lower esophageal sphincter, and the cause of this disease is not clear. Patients mainly manifest intermittent dysphagia. Patients with cardia laxity clinically mainly focus on relieving symptoms and treating the primary disease, light to moderate cases are generally treated with medication, and heavy cases or medication does not work to take surgical treatment. The treatment of cardia laxity is to change dietary habits, perform esophageal dilatation, lower esophageal cardia myotomy. It is recommended that patients go to the hospital in time, after clarifying the cause of the disease, to avoid delaying the disease.