The invention discloses a personnel automatic tracking technology system in a community. The system comprises an entry identity information identification module, an output end of the entry identity information identification module is connected to an input end of a central processor, the input end of the central processor and an output end of an unit door information identification module are connected, the entry identity information identification module includes a camera module, the output end of the camera module is connected to an input end of a data storage library, and the system relates to the technical field of community security management. According to the personnel automatic tracking technology system in the community and the method thereof, the output end of the entry identityinformation identification module is connected with the input end of the central processor to notify relevant security personnel of the community to intercept external personnel and ensure the security in the community, the unit door information identification module includes a unit door camera, a unit door WLAN, a unit door Bluetooth and a unit door NFC module, specific orientation and visitingunits of the external personnel can be located in time, and the safety performance is greatly improved.