An eye-safe all-fiber coherent Doppler wind lidar system is developed. The system employs an all-fiber single-frequency polarization-maintaining laser as emission light at 1550 nm. The laser has pulse energy of 0.2 mJ, repetition frequency of 10 kHz and pulse full width half maximum of 400 ns, and the linewidth is less than 1 MHz. The aperture of the receiver-telescope and scanner of lidar is 100 mm. The system is operated in velocity azimuth display (VAD) scanning mode for wind speeds measurement at different azimuths. The mixing echo signal is received by balanced detector and sampled by 1 G/s analog to digital (AD) acquisition card, then 1024 points fast Fourier transform (FFT) and spectrum accumulation of echo signal at every range gate are implemented in the field programmable gate array (FPGA) signal processor. For the line of sight wind speeds at each azimuth, the nonlinear least square method is used to retrieve three-dimensional wind field vector measured by lidar. The wind speed measured by lidar is compared with that of wind profile radar. Correlation coefficients of horizontal wind speed, wind direction and vertical wind speed of them are 0.988, 0.941 and 0.966.