This invention relates to a method for realizing the increase of 3G core network reliability using attribution position register different places backup includes the following steps: adding an attribution position register in 3G core network and assigning an IP adders connected to IP signaling network of 3G core network via a router and adding a link for transferring the backup information and selecting a suit of protocol used for transferring backup information. Since this invention clevery adds an attribution position register in 3G core network and in theory distance is not limited for the link between two attribute position registers and communication nexuses, remote distance different place backup can be realized, avoiding the problem for users can not operate when equipments meet with disasters. |