In this study, the precipitation process of stratiform and embedded convective cloud during 5-6 October 2007 in the Beijing area was simulated using the Chinese Academy of Meteorological Sciences mesoscale cloud model. Based on observation data, the characteristics of the macro- and micro-structure of the cloud system and precipitation were analyzed. The authors also analyzed the moisture budget and precipitation efficiency of the cloud system. The results show that the stratiform and embedded convective cloud was the main precipitation cloud system in this Beijing-precipitation process. The precipitation distribution of the stratiform and embedded convective cloud was not uniform. In addition, the microphysical variables in the cloud system were not uniform in the horizontal and vertical directions. The stratiform and embedded convective cloud over the Beijing area had microphysical structural characteristics of a mixed phase cloud. The melting of snow was the main microphysical process contributing to raindrop formation. The main source region of water vapor for this precipitation process in the Beijing area was the Yellow Sea and Mongolia. Two air flows merged in the north of the Shaanxi Province forming a southwest airflow that transported water vapor to northern China. Outside the Beijing area, water vapor and hydrometeor was mainly transported to the region from the western and southern boundaries. In the main precipitation period in the Beijing area, the flux of the total water substance in the horizontal direction was the net inflow. The estimation of the water budget of the water vapor, hydrometeor, and total water substance showed that the water substance was generally balanced. The precipitation efficiency, condensation rate, deposition rate, and hydrometeor precipitation efficiency were 5.6%, 4.77%, 4.19%, and 44.9%, respectively, in the Beijing area from 2000 BJT (Beijing time) 5 October to 1400 BJT 6 October 2007.