Short message intercepting method and system applicable to data exchange of internal and external network isolated environments

The invention discloses a short message intercepting method and a short message intercepting system applicable to data exchange of internal and external network isolated environments. The short message intercepting method comprises a short message sending step: a power information collecting system of an internal network sends the data information to a client of an external network in the form of short message according to a setting data format, and the client receives the short message; a data monitoring step: the client monitors an orderly broadcast sent by the short message, and obtains the short message data after receiving the broadcast; a data matching step: the client checks and matches the monitored short message number and a pre-stored number in a database stored at the client background; if not matched, the client does not monitor; if matched, the client determines the monitoring and analyzes content of the short message; data analysis and storage; data display. The short message intercepting method and system applicable to data exchange of internal and external network isolated environments can more vividly satisfy the search and display demands of administrators on system running condition and other important data, and better assist the decision making.