Abstract: Objective: To investigate the patho-histomorphology featcere of pulmonory-blastomce. Methods: The samples from two patients. accompained with detailed clinical dat.were investignted usihg H.E staining.immunohistochemical assays. Results and Conclusion: There were to see differentiationepithelium composition and undifferentiation mesenchyme tissue in the histomorphology. the latter KT (-)、EMA (-)、、LCA (-)、VM (+). rarelly pulmonory blastoma looks like the embryonal lung blast tissue, which is most commonly seen in children and between the age of thirty and forty years we should distinguish the patho-histomorpho-logy feature from translatic pulmonory blastoma and carci-sarcoma of the lung.