A continuous-wave (CW) fiber laser with 714 Watts output power has been obtained from 21 meters Chia-made Ytterbium-doped large-mode-area double-clad fiber. Two high-power collimated beam laser diodes (wavelenth 976 nm) with spatial filter and aspheric lens are used for pumping from the two ends of the fiber. A CW output power of 501 W is obtained under pump power of 760 W with backward pumping scheme. And the maximum output power of 714.5 W is realised under total pump power of 1137 W with double-sided end-pumping scheme, the optical-to-optial efficiency and the slope efficiency whicd respect to the launched pump power are 62.8% and 67%, respectively.