Dual-wavelength laser at 532 nm and 660 nm are covert from fundamental laser generated at 1 064 nm and 1 319 nm by single Nd∶YAG crystal rod.On the basis of 1 064 nm and 1 319 nm dual-wavelength laser acquirsition,the second harmonic wave at 532 nm and 660 nm can be achieved by using non-linear frequency conversion technology.The output power of 1 064 nm and 1 319 nm laser are 30.5 W and 8.78 W simultaneously，35.6 W and 11.2 W respectively.The output power of 532 nm and 660 nm laser are 5.34 W and 1.353 W at 10.5 kHz and 20.5 kHz simultaneously,6.72 W and 1.90 W respectively.The frequency-doubling conversion efficiency are 17.5% and 15.4% in the two condition mentioned above.The instability is less than 2%.