Abstract: With the continual progress of the construction of composite observing system for meteorology,the kind and amount of real-time meteorological data information transmission increase rapidly．Simultaneously,the transmission processing of real-time meteorological data information transmission presents a characteristic that it needs the function of parallel processing of many kinds of real-time data information in a certain period．For gathering,storing,sharing the real-time data information efficiently,reliably,completely,rapidly,the technique that it adopts XML (Extensible Markup Language) to mark and explain the content of kinds of message information,and form the definition of data transmission operation,then it makes the system possess the ability that it can adapt the variable observing data transmission operation,with the data processing application based on regular expression．It realizes the gathering,processing and distributing the real-time meteorological data information in the provincial information center,and makes up the disadvantages of the original operation system that the system is complex,the function is tedious,its expansibility is not good,and the efficiency is low.

Key words: Meteorological data,XML,Regular expression,multithread