Conservative management of 3 iatrogenic perforations of intrathoracic esophagus was reviewed. The primary disorders were achalasia in 2 patients and congenital tracheoesophageal fistula in 1 patient. Perforation occurred after treatment of the primary disorders in the distal esophagus in 2 patients and mid-thoracic esophagus in 1 patient. All the perforations appeared late after the previous treatments and the inflammation spread to mediastinum and pleural cavity in all the 3 patients. Conservative management of esophageal perforation was carried out with intraluminal drainage from the perforated site of esophagus[insertion of Levin`s tube and continuous suction], pleural drainage and feeding of liquid diet through gastrostomy tube with Fowler`s position. The patients revealed spontaneous closure of perforated sites about 3 to 4 weeks after this conservative management without open thoracotomy. This result suggests that this conservative management may be accepted as therapeutic method in the thoracic esophageal perforations regardless of cause and time of the perforation.