1. A rule set orchestration processing method for initializing each network device in a network, the method comprising: grouping, by a management device, according to device information of a plurality of network devices in the network, the plurality of network devices into at least two network device groups, wherein the plurality of network devices are grouped according to location information of each network device; querying, by the management device, a rule database according to device information of each respective network device group of the at least two network device groups, to obtain a first rule set matching the respective network device group, wherein the first rule set comprises a service rule of all services customized on each network device in the respective network device group; removing, through filtration, a duplicate rule in the first rule set of the respective network device group to obtain a duplicate-free rule set of the respective network device group; performing orchestration processing on the duplicate-free rule set of the respective network device group to obtain a second rule set that each network device in the respective network device group is capable of executing; and sending, by the management device, the second rule set separately to each network device in the respective network device group.