Problems with the gastric cardia may lead to the development of dysphagia or dysphagia, gastroesophageal reflux, and other complications. 1. Dysphagia or dysphagia: Stricture of the cardia due to inflammation, tumor, or abnormal function of the lower esophageal sphincter. When eating, dysphagia may occur. 2. Gastroesophageal reflux: If there is perforation or relaxation of the cardia, as the cardia of the stomach can not be tightened in time, gastroesophageal reflux phenomenon may occur after eating, which may show acid reflux, heartburn and so on. 3. Other complications: Early stage of cardia usually shows nausea, vomiting and so on. However, if the patient is in the advanced stage, he/she may have difficulty in swallowing, which will lead to serious nutritional deficiency, and then lead to a series of complications, such as anemia, stomach damage, gastrointestinal bleeding and so on. Therefore, if patients experience the above symptoms, they should go to the hospital in time to clarify the cause of the disease and get treatment as soon as possible.