In 2009,there were abnormal temporal and spatial variation of agro-meteorological factors and frequent agricultural meteorological disasters in Jilin province,which included drought and chilling injury in spring,summer drought and autumn drought and frost and other disasters.They caused serious injury to growth and yield of food crops.Although many input was put in to fight drought,meteorological disasters still led to drastically reduction of crop yields.At the same time,agricultural economy of Jilin province and the income of the farmers have been significantly influenced.Defense of agro-meteorological disasters is main way to ensure a stable and healthy development of grain production.