Based on the weather and data from meteorological satellites and radars, the macrophysical and microphysical characteristics of the stratiform cloud in Shanxi Province on 11 March 2009 were analyzed by using droplet measurement technology(DMT).The results showed that precipitation clouds were composed of altostratus and stratocumulus.Content of liquid water ranged from 0 to 0.42 g/m³.Particle concentrations observed by cloud droplet probe(CDP)and cloud imaging probe(CIP)were large, whose maximum values were 451.93 cm^-3 and 162.78 L^-1 respectively.Suitable temperature ranges for seeding were from -11.4 to -7℃ and from -4.4 to 0℃.The upper portion of altostratus was the nucleating and sublimation growth area.The mid and lower portions of altostratus was the active growth layer of ice crystals.Ice crystals from altostratus grew up by sublimation and coagulation in the stratocumulus.The spatial distribution of stratiform cloud microphysical parameters was uneven.The cloud droplet spectra were mainly of two-peak and multi-peak distributions.In the middle and top portions of stratocumulus, the spectra were exponential.When liquid water concentration(LWC) was less than 0.03 g/m³ or larger than 0.1 g/m³, the spectra were unimodal.