Recurrence of esophageal cancer may have symptoms of reflux esophagitis, diarrhea and respiratory tract infection. 1. Reflux esophagitis: reflux esophagitis may occur before recurrence of esophageal cancer, usually patients will have difficulty in swallowing, pain and burning sensation behind the sternum, which will be aggravated when consuming stimulating food. 2. Diarrhea: esophageal cancer will lead to digestive disorder before recurrence, and if the digestive disorder is serious, it will lead to more serious diarrhea. 3. Respiratory tract infection: when esophageal cancer recurs, due to the stimulation of tumor cells, it will lead to inflammation in respiratory system, thus forming respiratory tract infection. It is suggested that patients should go to the hospital for regular checkup after treatment, and if they find any abnormal situation in their life, they also need to go to the hospital for checkup immediately.