A clincal study was performed on 124 cases of the esophageal diseases experienced at Department of thoracic & cardiovascular surgery, School of Medicine, Chosun University during 6 year period from 1986 to 1991. The result were as follows: 1. The incidence ratio of male to female in esophageal diseases was 3.6: l. 2. The most common esophageal disease was cancer and occupied 73% of the total. 3. The most common associated disease was pulmonary tuberculosis. 4. Esophageal stricuture occurs in young woman and its cause is lye and strong acid. 5. The mortality rate was 33% [2/6] in esophageal perforation