目的探讨肺错构瘤的临床特点、治疗方案以及分析术前确诊率低的原因。方法对21例肺错构瘤患者进行临床分析。结果经手术病理证实肺错构瘤21例,手术前确诊率为10%。患者临床表现无明显特异性,高发年龄多为中年患者。肿瘤直径大多在1～3 cm之间,多数表现为单发结节。结论肺错构瘤是最常见的肺良性肿瘤,但误诊率高。手术是主要的治疗方法。 Objective To investigate the clinical features, treatment of pulmonary hamartoma and the reasons of low preoperative diagnosis. Methods 21 cases of pulmonary hamartoma patients were analyzed. Results 21 cases of pulmonary hamartoma confirmed by surgery and pathology, the preoperative diagnosis rate was 10%. No significant clinical manifestations of patients with high incidence of mostly middle-aged patients. Tumor diameter mostly between 1 ~ 3 cm, the majority of manifestations of solitary nodules. Conclusion Pulmonary hamartoma is the most common benign lung tumor, but the rate of misdiagnosis is high. Surgery is the main treatment.