Abstract:Using the monthly average temperature and monthly NOAA sea surface temperature data of 5 meteorological stations in Heyuan area in 1960-2016 years , this paper makes use of linear tendency, MannKendall test and other statistical methods to analyze temperature variation in Heyuan area and its response to ENSO events.The results show that the annual mean temperature and seasonal average temperature in Heyuan area are increasing, and the annual average temperature in summer, autumn, winter and annual average temperature are increasing significantly.The temperature in Heyuan area changed obviously from cold to warm from the middle and late period of 1980s to the end of 90s.The annual mean temperature has a periodic variation of 5 ~ 6, 14 ~ 15 and 24 years.In El Ni?o event, the annual mean temperature in Heyuan area tends to be higher ,but it is contrary in La Ni?a event.The effect of ENSO events on air temperature is lagging behind, and the most obvious effect on temperature in Heyuan area shows in the following year.