1. Pain behind the sternum or under the sternum The nature of pain can be burning, stabbing or pulling, especially when eating rough, burning or irritating food; 2. Difficulty in swallowing This is a symptom that most patients have, especially when eating ordinary food (that is, eating dry and rough food), but not when drinking water or porridge; the occurrence of this symptom is often related to the patient’s emotional fluctuation, and the symptom is heavy when the mood is bad. Foreign body sensation behind the sternum When swallowing saliva or other food, it always feels like something is “hanging” behind the sternum, which is often the early manifestation of esophageal cancer and needs to be alerted and seen as early as possible; 4.Late stage symptoms of esophageal cancer When the cancer presses the recurrent laryngeal nerve, it may cause hoarseness; invasion of phrenic nerve may cause eruption; pressing the trachea or bronchus may cause shortness of breath and bronchitis. Erosion of the aorta can produce fatal bleeding; when the cancer is complicated by esophage-tracheal or esophage-bronchial fistula or located in the upper esophagus, cervical sympathetic nerve paralysis can be produced when swallowing liquid; distant metastasis will have other corresponding symptoms.