The invention relates to a meteorological data fetching method and a device thereof; wherein, the method comprises carrying out feature splitting treatment on the plane message data to obtain the basic feature information, selecting the meteorological data fetching method corresponding to the plane message data according to the basic feature information, and fetching the meteorological data from the plane message data by using the meteorological data fetching method. In the method, the basic feature information is fetched from the plane message data, the correspondent meteorological data fetching method is selected for fetching the meteorological data from the plane message data containing the plane message data, thus realizing the meteorological data fetching from the plane message data, providing an important source for the acquisition of domestic meteorological data, and providing richer real time atmosphere meteorological data within Chinese territory for the International Meteorological Organization.