To analyze the characteristics of extreme precipitation changes in Lijiang River Basin under the background of global climate change, based on the daily precipitation data of various meteorological gauges from 1963 to 2019, the modified ETCCDI indices are used to analyze the trend of extreme precipitation in Lijiang River Basin at gauge scale and the whole basin scale using two non-parametric testing methods, innovative trend analysis(ITA) method and Mann-Kendall method. In addition, the annual precipitation, flood season precipitation and the occurrence time of extreme precipitation events are also included in the analysis. Results show that the annual precipitation and flood season precipitation are increasing from 1963 to 2019. The extreme precipitation indices show spatial distribution pattern of decreasing from northwest to southeast in the basin and the indices at all gauges show an upward trend in general. Besides, the occurrence time of the earliest extreme precipitation event within a year is generally delayed in the north of the basin and advanced in the southern part. At the same time, there is an obvious difference in the trend significance test results of extreme precipitation indices between ITA and Mann-Kendall methods, and the sensitivity of ITA is stronger.