In order to improve the service capability of monitoring and forecasting agricultural droughts and reduce the impact of agricultural droughts on social life and production, this paper sorts out and perfects the collection, storage, processing, production and release of drought information, and builds an operational agricultural drought monitoring and forecasting system for Liaoning Province, which realizes the integration, refinement, quantitative monitoring and forecasting of agricultural droughts, as well as the standardization, automatic production and distribution of drought products. Depending on meteorological drought monitoring technology, agricultural drought monitoring technology and remote sensing drought monitoring technology, the functions of observation data collecting and storing, drought information displaying and analyzing, drought product making and releasing are realized, and the integrated drought service system of provincial, city and county levels is finally formed, so as to improve the capability of disaster prevention and mitigation in response to drought disasters. The operational application of the system improves the quantitative, automatic and intelligent level of agricultural drought monitoring and prediction, and the operational capability of ground and satellite remote sensing drought monitoring and prediction. The integrated service mode of provincial, city and county levels constructed by the system facilitates the provincial operation center to produce drought products in a unified way, which allows the specialists of the provincial, municipal and county levels to simultaneously carry out refined drought guidance services.