Abstract: In order to realize the powerful and stable output of 532nm green laser,4.2W of CW TEM00 output at 532nm was successfully obtained by means of four-mirror Z-cavity resonant structure,LD end-pumped Nd∶YVO4 and LBO intracavity-doubling with Ⅰ-type angle-match.When the total pumping power of double ends LD is 26W,the optical-optical conversion efficiency is 17.6%.The most important thing is all instruments used are made in our country,which indicates that we have the ability of producing W-level all-solid-state green laser in commercial.