本文报道了２１例肺内型错构瘤的诊断与外科治疗体会，其发病年龄与肺癌者近似，但症状较轻且无进行性加重。为了减少术前误诊率并与肺癌相鉴别，本文强调术前影像学和纤维支气管镜检查的重要性。重点讨论错构瘤的诊断、鉴别诊断和外科治疗。作者认为肺内型错构瘤临床上虽属良性，但也应尽早手术治疗。手术方式以单纯肿瘤摘除和局部切除为主，强调术中行冰冻病理切片检查，作为决定术式的依据。 This article reported on the diagnosis and surgical treatment of 21 cases of intrapulmonary hamartoma. The age of onset was similar to that of lung cancer, but the symptoms were mild and were not progressively worsening. In order to reduce the preoperative misdiagnosis rate and distinguish it from lung cancer, this article emphasizes the importance of preoperative imaging and fiberoptic bronchoscopy. The focus will be on the diagnosis, differential diagnosis and surgical treatment of hamartoma. The authors believe that haemangioma in the lung is clinically benign, but it should be treated as soon as possible. The surgical approach was based on simple tumor removal and local excision, emphasizing the pathological examination of frozen pathology during surgery, as a basis for determining the surgical procedure.