Endobronchial hamartoma is a extremely rare lesion. The patient was 47 years old female and complained of cough and dyspnea for several years. On bronchoscopy, a finger tip size mass, nearly occluding the left main bronchus and located 4cm from the carina, was found. Bronchoscopic biopsy showed the chronic inflammatory findings.We performed bronchotomy and removed the mass through left thoracotomy. The endobronchial tumor was confirmed hamartoma histopathologically.