Based on daily rainfall dataset of 80 stations in Guangxi during the period of 1961-2012, the trends in all kinds of precipitation events in Guangxi are primarily studied in this paper. The results show that the percentage of heavy rain accounted for the largest, followed by moderate rain in spring. In summer, the percentage of rainstorm presented the largest, followed by heavy rain and moderate rain, and the minimum was the light rain. In fall, the percentage of moderate rain was the largest, followed by light rain and heavy rain, the rainstorm was the minimum. In winter, the percentage of light rain was the largest, followed by moderate rain and heavy rain, the rainstorm was the minimum. The percentage of light rain precipitation indicated downward trend in spring and summer. Moderate rain percentage showed a downtrend in spring and summer. As regard to the trend of heavy rain, it presented an increasing trend in winter while the trend was not obvious in the other three seasons. The studied results also showed that there was a significant increase in the percentage of rainstorm throughout the year, especially in summer. In general, the precipitation structure in Guangxi manifested as an increase in the extreme heavy precipitation.