A 400 Hz repetition rate, 1.52 W average power diode-pumped all-solid-state narrow linewidth sodium guide star laser was reported. Two acousto-optic Q-swithed 1064 m and 1319 nm lasers were used as basic-frequency lasers and they generated 589nm sodium guide star laser through a extra-cavity sum-frequency generation(SFG) LBO crystal. The master-slave drivers mode and the electronics delay compensation technology were employed to make the two Q-pulses time-synchronization. The conversion efficiency of SFG was about 25.1% and the electro-optical efficiency was 0.32%. To lock the central wavelength to the sodium D2a line,an etalon with water cooling was inserted into the 1064 nm oscillator.The central wavelength finally aimed at 589.159 nm(error less than ±1 pm) by tuning the temperature and angle of the etalon.