To enhance the monitoring and application of the C _band dual_polarization radar in intense precipitation weather in the Erhai Lake Basin, this paper uses minutely and hourly precipitation data from surface meteorological stations, ERA5 reanalysis data, and Dali C _band dual_polarization radar data, as well as the synoptic diagnostic analysis and radar image analysis methods, to analyze a short_time intense precipitation process that occurred in the Erhai Lake Basin in the early morning of September 1, 2024. It is found that a total of 3 station/times of extreme short_time intense precipitation occurred during this process, with the maximum rainfall intensity reaching 63. 4 mm/h. The short_time intense precipitation occurred under the influence of the southeasterly airflow in the periphery of the subtropical high, which provided important water vapor for the intense precipitation. The strengthening of water vapor convergence in the middle and lower layers and the thickening of the convergence thickness were important dynamic factors for the enhancement of precipitation. The unstable stratification was enhanced 2 h before the occurrence of intense precipitation, which was conducive to the upward 163. com。 motion of the atmosphere, forming clouds and causing rain. Severe convective rainfall lasting about 2 h occurred on the west bank of Erhai Lake in the early morning of September 1. Multi_cell echoes were generated and developed from south to north, causing multiple stations/times of short_time intense precipitation. The maximum echo center intensity of the strong convective cells reached 60. 5 dBz, the echo top height generally exceeded 9 km (the highest was 14 km), and the vertical liquid water content exceeded 20 kg/m2. The radar_estimated precipitation OHP had a good predictive effect on extreme intense precipitation. The correlation coefficient values of the three extreme short_time intense precipitation stations all exceeded 0. 95, and the precipitation was presented in the phase of the surfacerainfall to the surface. The changes of differential reflectivity ZDR at most stations were synchronous with the changes of rainfall intensity and 6 min precipitation, and the ZDR changes at some stations preceded the surface 6 min precipitation by two volume scans. KDP had a positive linear correlation with precipitation intensity, being basically synchronous or one to two volume scans ahead. The research conclusions could be a reference basis for forecasting and early warning of short_time intense precipitation in the Erhai Lake Basin.