Abstract: Using a DMT(Droplet Measurement Technologies) continuous flow streamwise thermal gradient cloud condensation nuclei(CCN) counter and the precipitation particle spectrometer, ground measurements of CCN and raindrop size distribution in Shanxi were conducted. According to the observation, affected by meteorological factors and human activities, the CCN concentration variations had a distinctive diurnal cycle with two apparent peaks. Precipitation had an scavenging effect on CCN particles. According to the expression N_CCN=CS^k, the CCN spectra can be derived. The fitting spectra parameters C (more than 2000) and k (less than 1) show the continental characteristic of CCN in Taiyuan. Microstructure parameters for stratiform and stratocumulus cloud precipitation were analyzed. It was found that the number concentrations of raindrop were 74-229 m^-3 and 305-743 m^-3, the average of liquid water magnitudes were 10^-2 g/m³ and 10^-1 g/m³ and the maximum raindrop diameters were 1.78 mm and 4.7 mm of three stratiform and stratocumulus cloud precipitation, respectively. Less than 1 mm and 0.2-2 mm raindrops made a bigger contribution to the number concentration and rainfall intensity of stratiform cloud precipitation. 0.2-2 mm and 1-3 mm raindrops made a bigger contribution to the number concentration and rainfall intensity of stratocumulus cloud precipitation. Stable spectra appeared in stratiform cloud were more than that of stratocumulus cloud. From the instantaneous spectrum distribution, most of stratiform raindrop size distribution had single, double, and three peaks and less stratiform raindrop size distribution had four and five peaks. Stratocumulus raindrop size distribution exhibited the multi-peak distribution mainly and no exponential distribution. From the average spectrum distribution, spectral width of stratiform cloud was narrower than that of stratocumulus cloud. Stratiform raindrop size distribution showed the exponential distribution. Stratocumulus raindrop size distribution displayed downward trend. The characteristics of raindrop spectra of convective-stratiform mixed cloud precipitation in Fenyang on 17 July 2008 were analyzed. The fluctuation of microphysical parameters was strong. The rainfall intensity was largely determined by the number concentration of raindrops. Under the same rainfall intensity, if there were more big size raindrops, radar reflectivity was even more. Through the strong echo, the number concentration, number of peaks, and spectral width were increased.