Abstract: The mesoscale convective system in a short-term severe precipitation process in Wuhan on 9 June 2011 was analyzed by using the observation data with high spatial and temporal resolution from wind profiler radar and ground-based microwave radiometer, radar echo data and surface automatic weather observations. The results show that this short-term severe precipitation was caused by a linear trailing stratiform mesoscale convective system (TS MCS). Fifteen min before the precipitation happening, strong tilting updraft occurred in the mid- and low-level and formed two small scale vertical vortices in front and at back of it. This characteristic conformed to the new cell generation model in balance between cool pool and wind shear. Before the severe precipitation occurred the surface air pressure rapidly fell, wind speed suddenly increased and, cloud base fluctuated in a drop process. After the severe precipitation occurred, in the front part of MCS the airflows moved from back to front relative to the“convection line”movement in boundary layer and high level of the troposphere, and moved from front to back in low level. In the back part of MCS the airflows moved from front to back in boundary layer, low and high levels of the troposphere, and moved from back to front in middle level. These airflow characteristics conformed to mature stage model of linear mesoscale convective system.