Abstract: Based on the data of high ahitude, ground observation, physical quantity field and radar, the process of a rainstorm and hail weather in July 28 of 2016 in Tongliao city of Inner Mongolia was analyzed. The resuks showed that the rainstorm and hail weather process was jointly influenced by upper trough, low level jet and surface convergence line. Meanwhile, the atmospheric stratification stability, vapor condition and dynamic condition were found as the main formation conditions for the rainstorm and hail weather. Furthermore, the radar products showed an indicative significance on forecast of the rainstorm and hail weather.