In the recent 50 years, nationallevel agrometeorological operation is developed and its domain of service also constantly expanded. The series service is formed, which includes agrometeorological information, crop yield and output forecasting, agrometeorological disaster monitoring, warning and assessing, ecological meteorological monitoring and agricultural weather forecast. The operational techniques are based on indices and supported by remote sensing and GIS. The techniques of index discrimination, statistic analyses and prediction,model simulation and comprehensive integration etc. are developed, for meeting the demands of agrometeorological service . In the future, agrometeorological operation will be more conformed to the standard, and will be more accurate and quantitative.