Abstract: Based on the Doppler radar data from Hohhot, automatic meteorological station data, FY-2 satellite data, and NCEP 1°×1° 6 h interval reanalyzed data, short-time heavy rain on July 15, 2013 in Hohhot was analyzed in order to accurately forecast the short-time heavy rain. The results showed that: in the large scale circulation background of Lake Baikal cold vortex, the short-time heavy rain was caused by meso-micro scale systems, under the subtropical high and typhoon; water vapor and instable energy were continuously added, because of the continuous transportation of warm and moist air by the southwest stream in front of the trough and the southeast stream between the subtropical high and typhoon; the systematic uplifting, topography and cold air triggered the occurrence and development of meso-micro scale convective systems. The stratiform cloud precipitation echo was obvious in this process, which originated from the south of Yinshan Mountains, and the basic reflectivity was ≤47 dBz. The characteristic of“bull’s eye”was presented and the curve of zero velocity was“S”in the basic reflectivity factor figure. The short-time heavy rain warning can be issued when the mesocyclone and low level jet were found, and the basic reflectivity was≥40 dBz.