Using the data detected by the W-band ground radar developed by China, the physical process of a cloud system with light rain in Hefei was analyzed, and the microphysical parameters in the water cloud and cirrus cloud were retrieved preliminarily based on the data from two different regions detected by the ground and airborne W-band radars. The results showed that: (1) The corresponding height where the echo intensity increased, and the Doppler velocity, linear depolarization ratio (LDR) and spectral width suddenly increased was the top of melting layer, then the thickness of melting layer was initially estimated according the LDR bright band. (2) Using empirical relations, the ice and liquid water content of cirrus cloud and water cloud were retrieved, and the effective radius of ice crystal cloud particles were also obtained using the derived formula. (3) Using bin-by-bin correction method in the groups, the echo intensity of water cloud was corrected, then the liquid water content was retrieved based on the corrected echo intensity, so the retrieval errors were reduced.