Abstract: The Yuehe River, one of the major tributaries of the Hanjiang River, is located in the Shaannan mountain area of Shaanxi Province, which is prone to heavy rains and floods. The study on the consistency of rain and flood could provide an important guide for prevention and reduction of natural disasters in mountainous disaster-prone areas. In this paper, the nonparametric Mann-Kendall test and Moving-t test methods were used to detect the temporal trends and mutation of hydrological variables and extreme precipitation indices from 1960 to 2012. The recession curve was derived from the historical flood series by the genetic algorithm, and the flood hydrographs were separated. Meanwhile, the variation characteristics of rainfall and floods and its relationship were analyzed by the grey relational analysis method. The results showed that the annual rainfall and runoff in Yuehe River Basin during the recent 53 years exhibited insignificant increasing and decreasing trend, respectively. The abrupt change point of annual runoff series occurred in 1985. The average proportion of underground runoff in total runoff changed from 21% before 1985 to 17% after 1985. The relationship between rainfall and flood became weakened after 1985, indicating that the stationarity of flood in the study area was challenged by climate change and human activities.