Based on the meteorological data of 57years in Yulin

Suide

and Yan′an of North Shaanxi Prov-ince areas

the meteorological factors and disasters were studied. Results indicate that the annual precipitati-on was decreased in warm events happened years and the average temperature was increased in warm events years. Compared with normal years the precipitation was decreased at 61. 59

7 6. 10

73. 33mm and average temperature was increased at 0.23

0.13

0.11℃. The precipitation and average temperature was decreased in cold events happened years. Compared with normal years the precipitation was decreased at 15.68

25.61

41.89mm and average temperature was increased at 0.22

0.15

0.24℃. Drought disaster was prone hap-pened in ENSO events years. The probability of drought meteorological disasters was greater than the proba-bility of La Nina years.