Objective To study the Feifukang extract on the changes of growth of tumor and levels of E-cadherin,Vimentin, and TGF-β in cancerous and para-carcinoma tissues of mice with Lewis lung cancer. Methods 40 mice were randomly divided into Feifukang(17.2 g crude drug/kg), 5-Fu(25 mg/kg), model and normal group. The tumor volume, tumor weight, and the expressions of E-cadherin, Vimentin, and TGF-β in cancerous and para-carcinoma tissues were measured.Results Compared with model group, the tumor volume and weight in Feifukang group was significa...