Abstract: A push notification device of warning areas is disclosed that comprising a transceiver connected to a third-party server to receive a plurality pieces of warning information from the third-party server. A processor determines whether a location information falling within a designated warning area of the plurality pieces of warning information based on a designated warning area of a push condition set by a push assembly, wherein the processor generates a warning signal if positive, or the processor determines another location information if negative. Then a notifier receives the warning signal, and performs a notifying operation based on the warning signal. Accordingly, as above-mentioned determination of warning areas, when the user is within the designated warning area, the push notification device can effectively alert the user to stay away from the warning area, thereby achieving the effect of warning prevention.