There is a certain difference between the age of esophagitis and esophageal cancer. Esophagitis and esophageal cancer are two different diseases. Esophagitis can occur at any age, while esophageal cancer is usually more common at the age of 40 or above. Esophagitis is an inflammatory disease that occurs when the esophagus is infected in some way, therefore, it can occur at any age. However, esophageal cancer is related to long-term bad life habits, and the age of onset is higher. Esophagitis is usually caused by the stimulation of gastric acid and bile, which leads to certain damage inside the esophagus and infection by pathogenic bacteria, causing esophagitis, and it can occur at any age. It manifests as acid reflux, heartburn and other discomforts. Esophageal cancer is generally related to improper diet, hereditary factors, lack of trace elements, etc. The occurrence of esophageal cancer is caused by long-term accumulation, and the age may be on the high side at the time of onset. It manifests as progressive difficulty in swallowing and choking sensation after eating. If esophagitis or esophageal cancer occurs, one should seek medical treatment in time so as not to delay the condition. In daily life, one should pay attention to rest, proper exercise and reasonable diet.