According to the data related to the temperature and precipitation of Guilin from 1981 to 2015,the long-term trend and inter-annual variation characteristics of climatic conditions in Guilin City in recent 35 years were analyzed in detail.At the same time,the influence of climatic conditions on citrus disaster was analyzed preliminarily.The results show that the average annual temperature of Guilin has been increasing at the rate of 0.76 ℃/ 10 years since the mid-1980s,and it has been increasing even faster in the late 1990s.This trend is obviously accelerated in spring,followed by that in winter.Temperature had a sudden change in 1997,leading to warm winter,more hot days with a high temperature over 35 ℃ and accumulated dynamic temperature(≥10℃) .This trend is more significant after 1997.The annual precipitation has been slightly increasing,the most obvious in summer,and the precipitation is increasing in spring.Climate warming increases the winter base of citrus pests,leading to the high frequency of low-temperature rain,floods,high temperatures and droughts.So the instability of citrus production is increased,thus causing damage to the yield and quality of citrus.