A LDpumped Nd:YAG laser at the wavelength of 1319nm was developed. By using two laser heads in series the maximum laser output power up to 192W was obtained while the total pumping power is 1220W. Using symmetric linear resonator and the opticaltooptical conversion efficiency up to 15.7%. With two acoustic Qswitch modulating at 10kHz ,the laser power of 155W was achieved with pulse width of 205ns.