A cache policy control entity, comprising: a receiving module, configured to receive statistical information of service data; and a sending module, configured to send a service data push request to a service provider, SP, device according to the statistical information, so that the SP device sends service data corresponding to the service data push request to a primary cache deployed in a core network and an edge cache deployed in an access network; wherein the sending module comprises: a determining unit, configured to determine according to the statistical information, a first data cache policy corresponding to the primary cache and a second data cache policy corresponding to the edge cache; and a sending unit, configured to send a first service data download request to the SP device according to the first data cache policy, so that the SP device sends service data to the primary cache according to the first service data download request; and send a second service data download request to the SP device according to the second data cache policy, so that the SP device sends service data to the edge cache according to the second service data download request, characterized in that the determining unit is further configured to determine, according to the statistical information, a third data cache policy corresponding to the edge cache; and the sending unit is further configured to send a third service data download request to the primary cache according to the third data cache policy, so that the primary cache sends service data to the edge cache according to the third service data download request. a receiving module, configured to receive statistical information of service data; and a sending module, configured to send a service data push request to a service provider, SP, device according to the statistical information, so that the SP device sends service data corresponding to the service data push request to a primary cache deployed in a core network and an edge cache deployed in an access network; wherein the sending module comprises: a determining unit, configured to determine according to the statistical information, a first data cache policy corresponding to the primary cache and a second data cache policy corresponding to the edge cache; and a sending unit, configured to send a first service data download request to the SP device according to the first data cache policy, so that the SP device sends service data to the primary cache according to the first service data download request; and send a second service data download request to the SP device according to the second data cache policy, so that the SP device sends service data to the edge cache according to the second service data download request, characterized in that the determining unit is further configured to determine, according to the statistical information, a third data cache policy corresponding to the edge cache; and the sending unit is further configured to send a third service data download request to the primary cache according to the third data cache policy, so that the primary cache sends service data to the edge cache according to the third service data download request. a determining unit, configured to determine according to the statistical information, a first data cache policy corresponding to the primary cache and a second data cache policy corresponding to the edge cache; and a sending unit, configured to send a first service data download request to the SP device according to the first data cache policy, so that the SP device sends service data to the primary cache according to the first service data download request; and send a second service data download request to the SP device according to the second data cache policy, so that the SP device sends service data to the edge cache according to the second service data download request, characterized in that the determining unit is further configured to determine, according to the statistical information, a third data cache policy corresponding to the edge cache; and the sending unit is further configured to send a third service data download request to the primary cache according to the third data cache policy, so that the primary cache sends service data to the edge cache according to the third service data download request.