A frequency stabilized and doubled Nd:YAG laser was designed based on our frequency stabilized laser. The configuration of cavity was recalculated. Both KTP and MgO:LiNbO3 were used for frequency doubling and the method of angular match was chosen. The output powers of 800mW and 50-100mW were obtained respectively for the fundamental (1.06μm) and second harmonic generation (0.53μm) using a pumping power of 2.5kW. The intensity fluctuations were less than 2% for the 1.06μm wave and 5% for 0.53μm wave. The frequency stability at 1.06 μm and 0.53 μm signal-frequency laser output were respectively better than 2 MHz and 5 MHz.