The present invention provides a cell tracking method, device and system, relating to the communication technology field. The method comprises: receiving the cell tracking activation order sent by a network element management system, wherein the cell tracking activation order comprises at least cell ID information,detecting whether a user access the cells identified by the cell ID information,determining whether the accessed user device establishes a first link with a core network when detecting that a user device accesses the cell identified by the cell ID information,and sending the cell tracking order to the network element of the core network so as to make the network of the core network track the user device on the first link when the first link is established between the user device and the core network. The present invention solves the problems that in the prior arts, the core network can not track the signaling of the user device in the specified cell.