Narrowband sodium fluorescence lidar can be used to measure wind and temperature of sodium layer from 80 km to 110 km, which is the development trend of high-altitude atmospheric sounding. This paper reports a most recently developed fiber-coupled all-solid-state narrowband sodium fluorescence lidar, introducing the whole design, key technologies and the preliminary measurement results. This system has achieved the sodium number density and temperature detection of the sodium layer over Beijing. This all-solid-state lidar has good stability, high reliability and less hardware adjustments, which provides a good means for sodium layer measurement.