Abstract:The function of traditional spectrum monitoring system is complicated, expensive, and suitable for profession to use, and it can be replaced by a spectrum analyzer when the monitor request is not high, but the problem is that the monitor efficiency may be inefficient and it can’t record the spectrum. Aiming at this problem, this thesis designed a new spectrum monitoring system based on labview software, and implemented the function of automatic detection of a signal spectrum based on the model of one-class support vector machine , displaying spectrum on many dimension situations in the form of waterfall chart and fluorescent fingerprint, recording and replaying for a signal spectrum. The experimental results show that the new system for spectrum monitoring works well, and has value of popularization and application.