Abstract: To study the mesoscale characteristics of the local hailstorm in Shenyang, and determine the characteristics of the physical parameters and radar echo in the hail, based on the conventional meteorological data, Doppler weather radar data and LN-LAPS (local analysis and prediction system in Liaoning) data, we analyzed a hail process on the morning of September 22, 2017 from the aspects of thermal and dynamic condition, PPI (plan position indicator) and vertical structure of radar echo. The results showed that: the hail occurred under the NECV (northeast cold vortex), instability environment and abundant water vapor, there was a wind convergence in the near-surface, an anticyclone divergence zone in the high-level; radar echo showed that the characteristics of the super cell storms overhung on the vertical profile of reflectivity factor; LN-LAPS could explain the vertical structure of the hail event, especially had a strong interpretation and application capability to the structure of such small-scale weather systems leading to the hailstorm.