We detail the comparison on laser performance of A-O Q-switching Nd:GdVO 4 and Nd:YVO 4 lasers operated at 1.06μm. The results reveal that Nd:YVO 4 crystal, compared with Nd:GdVO 4 crystal, is a more favorable gain medium when higher repetition rates and shorter pulse width are desired, owning to its larger stimulated emission cross-section.