In order to study the raindrop spectrum characteristics of different types of precipitation during a precipitation process in Weining, Guizhou Province, this article uses observation data from 8 raindrop spectrometers in Weining to analyze the raindrop spectrum characteristics of different precipitation types during the Weining precipitation process on May 18, 2023. The results show that the total concentration of raindrop spectrum, rain intensity and radar echo intensity in stratiform cloud precipitation stage were significantly smaller than those in cumulus? stratiform mixed cloud precipitation stage, but the average particle size was slightly smaller by about 0. 1 mm. The correlation coefficients among water content, rain intensity and total concentration were greater than 0. 94. The spectral patterns of the two types of precipitation showed a single peak value, among which the peak value of stratiform cloud was 118. 51 a/ (m3 · mm), the maximum spectral width was 5. 188 mm, and the peak value of cumulus_stratiform mixed cloud was 631 a/ (m3 · mm) and the maximum spectral width was 8. 188 mm. The GAMMA goodness_of_fit R2 of the two types of precipitation was greater than 90%, and the fitting effect was better when the particle diameter was less than 1. 875 mm. This study is the first to quantify the microphysical parameters of the stratiform cloud precipitation and the cumulus? stratiform mixed cloud precipitation in the Weining region and their differences, providing a reference index for using raindrop spectrum parameters to guide weather forecasting and early warning in the region, and to identify the timing of artificial rain enhancement operations. Additionally, the good fitting characteristics of the Gamma distribution in raindrop spectra for small and medium droplet sizes also offer a key algorithmic support for numerical simulations of microphysical precipitation processes and quantitative radar estimation of precipitation.