A lidar system for meteorological observation, in which pulsed laser light having a prescribed central frequency is emitted from a laser device and reflected light thereof is observed, includes: a spectral analyzer for spectrally analyzing reflected light for observation into light in the wavelength region of the laser light and light in wavelength regions other than the region of the laser light; a first and a second filter for selectively passing light centered on a first and a second frequency component among the light of the wavelength region of the laser light, respectively; a first and a second photodetection unit configured to detect the first and second frequency component light passed through the first and second filter, respectively; and a third and a fourth photodetection unit configured to detect the light of the wavelength region of the laser light and regions other than the region of the laser light, respectively.