Abstract: Through analysis of 60 years of daily gale data in Liaocheng City, daily average wind speed of the city showed a slowing trend, but extreme gale disasters still occured from time to time．According to analysis of characteristic values of disaster factors, combined with agricultural index of gale disaster and actual disaster situation in Liaocheng City, different effects of gale on winter wheat, summer corn, and greenhouse facilities were divided into three gale hazard warning levels．Comparative application test was carried out with gale disaster data in Liaocheng City from 2021 to 2022, overall accuracy rate reached 80%, indicating that this method could be applied to gale disaster warning service．