Abstract: The paper designed a simple intelligent wireless security alarm system for classroom to solvethe problem in the extensive security management in classroom. The hardware is divided into terminalwireless data acquisition module, host coordinator and PC. The terminal transmits the enyironmental in-formation of the classroom to the host, which is connected to the host computer through RS232 serial bus.The host computer applies LabVIEW to complete the data analysis and processing, and realizes the hu.man-computer interaction monitoring display interface of the classroom security alarm svstem. The svstemhas lots of advantages such as simple structure, convenient installation and maintenance of the wirelesstransmission，good expansibility and applicationvalue.

Key words: STC MCU: LabVIEW, very low power wireless transceiver ( CC1101 ), alarm system;wireless transmission