A linearly polarized CW diode-side-pumped Nd∶YAP laser at 1342 nm is reported. Performances of the laser with different output couplers were studied, and a c-axis polarized laser with the cw output power of 132.2 W was obtained with a pumping power of 700 W. Slope efficiency of 29% and optical conversion efficiency of 19% were obtained, and the laser linewidth is about 10GHz, the laser power stability is better than 0.73% for one hour.