A maximum of 5.3 W CW output green laser has been obtained by intracavity frequency doubling with LBO in a Nd:YVO4 laser doubly pumped by two laser diodes. With Ⅰ-type noncritical-phase-match (NCPM), temperature tuning of LBO crystal, a maximum of 5.3 W of cw TEM00 mode output at 532 nm has been obtained with 20 W pump power, the optical-optical conversion efficiency is 26.5%. The mode of the green light and the relation between the output power of green laser and the temperature of LBO crystal have been measured, they all agree well with the theoretical results.