A continuous laser-diode end-pumped Nd:YAP/KTP laser with dual wavelength outputs at 0.54 μm and 1.08 μm has been achieved. The ring laser resonator consists of five mirrors and a piece of frequency-doubling crystal KTP is placed between two concave mirrors. After calculating and comparing the waist-sizes of the fundamental wave and the astigmatism at different incident angles to the concave mirrors, the curvature radii of the concave mirrors as 100 millimeter are chosen and the incident angles of infrared light are less than 3 degree. The cooler and temperature controller of Nd:YAP rod are improved and the lower dopant concentration of the Nd:YAP (0.6 at.-%) is chosen, thus the thermal effect of the laser rod is decreased. Under a pump power of 10 W, the output powers for the second-harmonic wave and the fundamental wave of 1.02 W and 700 mW are simultaneously obtained with the intensity fluctuations less than ±0.65% and ±0.5%, respectively. With the frequency-stabilizing servo system on, the frequency stabilities for 0.54 μm and 1.08 μm wavelengths are better than ±484 kHz and ±240 kHz, respectively.