Disclosed is a configuration method for implementing air interface synchronization including that: a network side determines the number of layers to which cells are divided in an Operation, Administration and Maintenance (OAM) manner or by a specified node, configures a monitoring subframe position for air interface synchronization to the cells of each determined layer, and sends or configures the number of layers and information of the monitoring subframe position configured for the cells of each layer; or, the network side determines a source cell configurable to be monitored by a local cell for air interface synchronization in the OAM manner, configures cell information corresponding to the source cell and configures the cell information to be the local cell; or, the specified node determines a source cell configurable to be monitored by a local cell for air interface synchronization, configures cell information corresponding to the source cell, and sends the cell information as the local cell. The present disclosure further discloses a configuration node and system for implementing air interface synchronization.