Abstract: Due to the special topography and rare gale events in the Sichuan Basin, its characteristics and mechanism are not fully understood. Using the meteorological observation station data, sounding data, X-band phased array radar, S-band radar and its mosaic, the fifth-generation European Centre for Medium-Range Weather Forecasts reanalysis data (ERA5), this study analyzes the characteristics and mechanism of a rare regional gale event occurring in the Sichuan Basin on April 11-12 2022, and further explores the predictability of strong gale locations and application of X-band radar. The results are as follows. (1) The eastward-moving upper-level trough brings dry and cold air which overlays a low-level warm ridge, aligning with the ground cold front and convergence line to create favorable conditions for deep convection. (2) The distribution of gales exhibits evident regional variations. In the northern Sichuan Basin, gale intensity is relatively weak, mostly force 8-9, but widely distributed. In the central basin, intensity is the strongest, reaching force 11-13 scale and distributed in a northwest-southeast linear pattern. In the southern basin, only a few stations recorded gales, yet the intensity exceed force 12. (3) The intensity and distribution characteristics of gales are directly linked to their formation mechanisms. The northern basin experienced mixed-type gusts due to the passage of synoptic-scale cold fronts. The northward intrusion of warm and moist airflow into the southern basin triggered convection, producing strong and scattered thunderstorm gusts. In the central basin, the convergence of warm and cold air leads to severe convection such as a squall line. The combined effects of convective downdrafts caused by the downdraft convective available potential energy and density currents form a northwest-southeast linear distribution of gusts. (4) The precise locations of these thunderstorm wind gusts show some predictability. The three-hour negative ground pressure variation areas indicate the intensity of warm advection ahead of the cold front and provide a 1-2-hour advance indication of the potential locations of stronger convective storms are more likely than in surrounding areas. (5) X-band phased array radar provides detailed observations of γ-mesoscale convective storms that directly caused the wind gusts in Chongqing. Observations reveal that prior to the onset of wind gusts, the radar reflectivity centroid of the new cell rapidly descends within 10 minutes, which allows for a 10-20-minute lead time to issue warnings for severe thunderstorm wind gusts.