The paper explores private firms? internationalization development path and latest tendency in Zhejiang province by centering on firms? internationalization motives, modes, foreign entry location choice, existed problems and problems solution or measures perspectives. The paper also selects several Zhejiang firms which have successfully implemented internationalization strategies as representative case studies. On the basis of thorough exploration and discussion, the paper argues Zhejiang firms? internationalization follows western traditional FDI theories on one hand, on the other hand, they also demonstrate a new model featured with accelerated international development by flexibly taking advantage of globalization?s new tendency, and it is worthwhile to note that new model cannot be fully explained by traditional theories. Meanwhile, Zhejiang firms? international development road is filled with challenges; the paper also recommends some problems solution and measures at the end. Key words: Private firms in Zhejiang, Internationalization and Go-global.