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For the further study of precipitation microphysical characteristics in Shenzhen, The data from the Parsivel laser raindrop spectrometer and rain gauge are used to analyze the precipitation processes of 2015 to 2016 It is found that in case of different precipitation grads, the Parsivel laser raindrop spectrometer has a good correspondence with the rain gauge in measuring minute rainfall, which shows that the Parsivel laser raindrop spectrometer can adapt to the heavy rain environment in Shenzhen. All precipitation processes are classified according to different weather conditions: westerly, southwest monsoon, and tropical cyclone precipitation. The spectral characteristics of the three types of precipitation processes are analyzed. It is found that in the condition of tropical cyclone precipitation, the density of small particles and large particles was the biggest and the smallest respectively, which indicates that the precipitation process was denser. However, in the condition of south west monsoon precipitation, the density of small particles and large particles was the smallest and the biggest respectively, from which we could see that the precipitation was very heavy. The characteristics of westerly precipitation were in between the first two.