This paper constructs a distributed optical fiber sensing technology p erimeter security monitoring system based on dual Mach Zehnder interferometer an d an intelligent video linkage system based on Four-rotor UAV with video tracki n g function.The system integrates distributed optical fiber disturbance sensing technology with UAV technology.Distributed optical fiber sensing technology is based on two-way Mach Zehnder interferometer,and Positioning using time delay d ifference between positive and negative signals.UAV carries out video processin g for Four-rotor UAV with ODROID airborne computer.The disturbance sensor syst e m monitors all kinds of intrusion behavior,locates the intrusion by signal proc essing,and sends out alarm information.At the same time,UAV Video Linkage.UA V uses its "God′s Perspective" to explore the intrusion location,monitor the in trusion,and track the intruders in real time.Video intrusion is recorded and t ransmitted to the terminal.The whole process is intelligent and automated.The experimental results show that the positioning accuracy of the system can reach 10m,the Four-rotor UAV has the advantages of stable flight,fast response,aut omatic recording,automatic return,and real-time transmission of video to the c lient.The test results show that the system can effectively detect and locate in trusions,and realize video linkage with UAV.The system integrates distributed optical fiber sensing technology and intelligent UAV video link technology to fo rm a hybrid intelligent perimeter security monitoring system.