Sea level warning method based on real time data documents

The invention relates to a sea level warning method based on real time data documents. A real time sea level value of a tide station can be analyzed according to real time data documents generated by a sea observational network so as to monitor and warn multiple stations. But the quantity of documents of the real time data documents is great and the arrival frequency thereof is high, and the document arrival condition is hard to detect in real time. Aiming at the problems, the method comprises the following steps: firstly, pre-generating path information of real data documents to be processed through a document naming algorithm; then, detecting the arrival and writing states of the documents to be processed; and finally extracting actually measured sea level values from newly arrived documents to judge the warn level as well as outputting information such as names of tide stations reaching the warn seal level value and actually measured sea level to a warn station list corresponding to a software interface in grade.