Abstract: This article reported 6 cases of pulmonary inflammatory pseudotumor combined carcinoma which were 7.6% of total patients with pseudotumor in the same period.The incidence was rising in recent years, so this disease should be put tention to.The pseudotumors usually were pseudopapilloma and histocytoma. The coexisted cancer often were squamous cell carcinoma, sometimes adenocarcinoma and undifferentiated carcinoma.In the operative sample there was much great pseudotumor and too small carcinoma focus to make an erroneous diagnosis or to neglect.Careful and exact preoperative examinations such as sputum cytology,bronchoscopy and transcutaneous lung biopsy is great helpful to the final correct diagnosis. Though the mass was great, the stage of coexisted carcinoma was earlier respectively so that the prognosis was better than that of lung cancer without pseudotumor.