Abstract: To understand the characteristics of rainfall redistribution of eucalypt plantations for improving management plan of eucalypt plantations so as to enhance capacity of water and soil conservation of forest stands, this paper did a research on monitoring outside and inside rainfall, throughfall and stemflow from July 2015 to May 2016 based on Guangxi Nanning Eucalypt Plantation Ecosystem Observation and Research Station to analyze characteristics of rainfall redistribution of a Eucalyptus urophylla × E. grandis plantation. The results showed that the total of rainfall was 1536 mm, the total of throughfall was 1042 mm, which accounted for 68% of rainfall, the total of stemflow was 9.2 mm, which only accounted for 0.6% of rainfall, and the total of interception was 490 mm, which accounted for 32% of rainfall. A logarithmic function relationship was established between monthly throughfall and rainfall, and an obvious throughfall was observed when rainfall was more than 25 mm. Throughfall and throughfall rate increased with increasing rainfall intensity; when rainfall intensity was more than rainstorm, the whole outside rain nearly penetrated canopy, forming inside rain. Under the conditions of light rain, moderate rain, heavy rain and rainstorm, accumulative throughfall showed an increasing quadratic polynomial function relationship with accumulative rainfall. Meanwhile, the throughfall beginning time of light rain and moderate rain lagged behind rainfall about 20 min and 10 min, respectively; however, the time of throughfall and rainfall showed a simultaneous change tendency under the heavy rain and rainstorm. In spite of too little stemflow which was ignored in the process of rainfall redistribution estimation, its role should not be neglected. Monthly rain showed a positive power function relationship with monthly interception, but a negative exponential function relationship with interception rate.