Abstract: Based on Liaoning Province from 2003 to 2011 in strong convective weather sounding curve data files for building space and time to get the sounding station sounding curve changes in sounding data file, using MICAPS software calculation for each physical quantity parameter values, the physical distribution range of parameter values in all kinds of strong convective weather is summed up, determining the threshold value based on strong convective weather patterns. In terms of short time of heavy rain and the hail weather index (A), Integral Q (IQ), K Index (K), Showalter Index (SI), zero layer height (H₀), 20 degrees below zero height (H_-20), the six kinds of physical quantity parameter values have obvious differences. Strong wind weather between short-term rainstorm and hail weather, and its parameter values with two kinds of weather have comparatively large cross connections: (1) analyzing A, IQ, K of three kinds of weather, it is shown that the water vapor of the short-time heavy rain conditions is significantly higher than that of hail weather, and the heavy rain that depends on water vapor than the hail weather is higher; (2) from the H₀, H_-20 comparing and analyzing the two kinds of physical parameter values of hail weather, the parameter value was lower than that of heavy rain; (3) the hail weather SI is higher than the stormy weather.