目的：观察中药复方保肺饮（ＢＦ）对实验性肺癌的防治作用。方法：在支气管注射三甲基胆蒽（ＭＣＡ）诱生大鼠肺癌过程中用ＢＦ进行防治，对已发生癌变的动物统计体重变化、病理检查癌变程度及炎症并发情况。结果：ＢＦ可以明显减轻癌性病变程度、减少炎症并发，减轻体重下降。结论：ＢＦ对实验性肺癌有明显防治作用。 Objective: To observe the preventive and therapeutic effects of Baofuyin (BF), a traditional Chinese medicine compound, on experimental lung cancer. METHODS: BF was used for prevention and treatment of rat lung cancer induced by bronchoalveolar injection of trimethylcholanthrene (MCA). Changes in body weight, degree of pathological examination, and degree of inflammatory complications were recorded in animals that had developed cancer. Results: BF can significantly reduce the degree of cancerous lesions, reduce inflammation, and reduce weight loss. Conclusion: BF has obvious preventive and therapeutic effects on experimental lung cancer.