Cardia polyp is a lesion on the mucosal surface of the esophagus, which is also dominated by inflammatory proliferative lesions and is a benign tumor. Cardia polyps manifest as swallowing discomfort, or burning sensation behind the sternum. Cardia polyp is a benign tumor originating from the mucosa of the cardia. It is related to frequent alcohol consumption, irregular diet, repeated irritation of gastrointestinal inflammation, genetics and other factors. Esophageal cardia polyps are inflammatory growths that occur in the upper esophagus and cardia, larger polyps are likely to cause clinical symptoms, and some of them may be adenomatous and have greater cancer potential. Smaller pancreatic polyps have little or no early symptoms. If the polyp grows further, some symptoms similar to cardia cancer will appear, and the early symptoms are as follows: Early symptoms: 1. There are only light symptoms of swallowing discomfort, usually can enter the general food, does not affect health, sometimes there is a stagnant feeling when swallowing food. The symptoms are often related to the patient’s mood swings. 2.Posterior sternal pain or stuffy discomfort. About half of the patients complained of slight pain or stuffy discomfort behind the sternum when swallowing rough and hard food, hot food or irritating food, but the pain is lighter when eating liquid and warm food. 3. Foreign body sensation in the esophagus. Patients feel that there is something like rice grains or vegetable slices attached to the wall of the esophagus, which cannot be swallowed and cannot be spit out, and even if they do not swallow, there is a foreign body feeling. 4. Dry throat and throat constriction. One-third of the patients complained of dryness and tightness in the throat, with unfavorable or slightly painful swallowing of food, especially into dry or rough food. 5, the feeling of slow passage of food and stagnation. The same sensation is also found with drinking water. In addition, more than half of the patients’ symptoms appear one year after diagnosis, and some of them are as long as four years, so it is clinically important to make correct diagnosis and take correct treatment for early gastric cancer.