Disclosed are a cell processing method, apparatus and system. The cell processing method includes: a first communication node sends multiple neighbor cell lists; where the neighbor cell lists includes: a neighbor cell list of neighbor cells connected to a first core network and at least one neighbor cell list of neighbor cells connected to only a second core network; or a neighbor cell list of neighbor cells connected to only the first core network, a neighbor cell list of neighbor cells connected to both the first core network and the second core network, and at least one neighbor cell list of neighbor cells connected to only the second core network.