Based on the meteorological and historical data of the past 50 years in Northern Shanxi Province

the influence of ENSO(E1 Nino-Southern Oscillation)events on the climate of Northern Shanxi Province was studied. The results show that both annual total precipitation and annual average temperature decreased at the years of ENSO warming events(E1 Nino events) comparing to the normal years. In the areas of Datong

Suzhou

and Qizhou City

annual total precipitation decreased for 46.83

46.44

and 80.96 ram

and annual average temperature were reduced for 0.03

0. 17

and 0.22℃

respectively. Similarly

both annual total precipitation and annual average temperature were lower

but less intensively

at the years of ENSO cold events(La Nina events) than the normal years. The annual total precipitation was 21.27

26.32

and 25.30 mm lower

and annual average temperature was 0.03

0.18

and 0.04℃ lower

respectively in the three re-gions. The annual average temperature of the sudy area changed in a direction opposite to that of the Loess Plateau in the years of E1 Nino events. The influence of ENSO warming events on the temperature represen-ted an ascending trend as in the order of regions： Datong City＜Shuozhou City＜Xinzhou City

as the lati-tudes of the areas decreased. The ENSO warming events imposed a similar effect on annual total precipitati-on

increasing the probability of the occurrence of draught disasters and harming the industrial and agricul-tural productions in study area.