The invention relates to an entrance guard management method and system as well as a background server. The entrance guard management method comprises the following steps: receiving passing data transmitted by a user terminal by the background server and acquiring corresponding resident room number information according to user identifiers in the passing data, wherein the passing data comprises the user identifiers, passing time and entrance guard identifiers; storing the passing data and the corresponding resident room number information into a passing recording table, wherein the passing recording table comprises the entrance guard identifiers, the user identifiers, the resident room number information and the passing time; based on the passing recording table, counting and analyzing the resident room number information corresponding to each entrance guard identifier respectively, so as to determine a corresponding relation between each entrance guard identifier and position information; and according to the determined corresponding relation between each entrance guard identifier and position information, sending the position information to corresponding Bluetooth entrance guard equipment. By implementing the technical scheme provided by the invention, the labor cost and the time cost are greatly saved and the accuracy is relatively high.