The stratiform cloud system embedded by convection, having considerable precipitation efficiency, exhibits the characteristics of both cloud types and thus merits research. In this paper, coupled with observation data, wide-range strong precipitation weather in Northeast China on July 1, 2010 is simulated using a mesoscale Weather Research and Forecasting (WRF) model, and two typical embedded convection cases are analyzed in detail. Both cases are formed by low-level convection embedding into stratiform cloud. Where the stratiform cloud is directly above the convection, the development and precipitation intensity are more vigorous. On the basis of a comparison of the two cases with the usual convective and stratiform clouds within the simulated domain, we reveal a longer lifecycle of the convection embedded in stratiform cloud. In addition, for the convection embedded in stratiform cloud, not only is the lower level water vapor convergence stronger, the in-cloud liquid water content is larger and more unstable energy aggregates at the low level. When the liquid water content is corresponding, the different in-cloud solid water content may affect the precipitation intensity of the embedded convection. On the other hand, as the evolution of embedded convection system, the vertical scale, water content and stratiform cloud precipitation from embedded convection system all increase. For the precipitation mechanism, both the in-cloud solid and liquid water content increase with the development of the embedded convection system. However, the abovementioned changes to conventional stratiform cloud are not obvious.