Changes of precipitation,the seasonal distribution and pattern have always been one of the hotspots of global climate change research. From new perspectives of combinations of trend,fluctuation characteristics and extreme event,the changes of trend,fluctuation and extreme event of precipitation are analyzed using daily precipitation data from 72 meteorological stations on the Tibetan Plateau from 1961 to 2015. The following conclusions can be drawn: (1) Temporally,over the 55 years,the regional-averaged annual precipitation,maximum daily precipitation and the days when precipitation≥10 mm had increased with the rates of 6. 59 mm·(10a)~(-1), 0. 33 mm·(10a)~(-1) and 0. 26 d·(10a)~(-1),up to 36. 2 mm,1. 8 mm and 1. 4 d,respectively. (2) Spatially, over the 55 years,annual precipitation had increased in most areas of the Tibetan Plateau,along with an instability increase. But there were great regional differences in precipitation fluctuation variation. The annual precipitation fluctuation had increased slowly in the vast central and western regions,while in the eastern regions,the rapid increasing regions of and the rapid decreasing regions of precipitation fluctuation had alternatively distributed from north to south,and so did the extreme precipitation intensity and frequency. (3) The combination of trend, fluctuation characteristics and extreme changes had indicated that the future extreme precipitation events will likely increase obviously in the Qilian Mountains,the eastern Qaidam Basin,Qinghai Lake basin and source regions of the Yangtze River in the eastern part of the plateau,the probability of heavy precipitation will also increase in the central and western regions of the plateau,and the drought events will probably increase in the southeastern margin of the plateau.