The invention relates to the technical field of safety monitoring, and in particular to an automatic tracking system for campus monitoring. The automatic tracking system comprises a central processingcircuit, a light source system, an acquisition system, a motor system, a light source lens group and a collection lens group. The device can not only realize the synchronous zooming automatic tracking of a close range infrared lens and the laser lens, but also can be used for realizing the synchronous zooming automatic tracking of a remote infrared lens and the laser lens, thereby solving the problem that real-time monitoring can only be achieved on illegal crime, human body fever, human body movement and other behaviors, but locking and automatic tracking cannot be implemented on the targetsin the prior art is solved.