Abstract: At present, most of coherent Doppler lidar adopts heterodyne technique to obtain atmospheric velocity and direction in the radial direction of the radar. In this paper, a continuous all fiber Doppler wind lidar system was developed based on image-reject homodyne technology and using integrated 90° optical hybrid receiver. The IQ cross signal was got through the phase control of the local or receiving signal, and the radial wind was detected based on the image-reject homodyne technology. Compared with the lidar using heterodyne technique, this lidar presents some advantages, including higher signal to noise, stronger radar storage, greater speed range at the same ADC sample rate and so on. In the end, a lot of comparative experiments were implemented to verify the credibility of all fiber Doppler wind lidar. The results show that this system has high detection accuracy, the wind direction goes all the way with the anemometer, the wind speed bias is of -0.03 m/s and standard deviation is of 0.63 m/s.