A method for establishing a network in a wireless network, comprising: selecting, by a wireless station, a working channel and a primary channel which satisfy a bandwidth requirement and an interference level in a channelized set within a given frequency band according to local configuration information and/or through channel scanning and interference detection, wherein the local configuration information includes a supportable channelized set, a bandwidth of a working channel, a primary channel of a working channel; calculating a central frequency point of the primary channel of the working channel through the following methods according to the local configuration information: in a given frequency band, utilizing two or more channelized sets to indicate different channelization schemes in a scope of frequencies which are mutually overlapped or partially overlapped, wherein in one channelized set, any two available basic channels are not overlapped at all and an interval between central frequency points of any two available basic channels is an integer multiple of an interval between basic channels; specifying a unique identification number for each channelized set, or, in a superset consisting of all channelized sets satisfying a frequency planning area code, specifying for each channelized set a unique identification number within a scope of the superset; and for a primary channel of any available channel in a channelized set, calculating a central frequency point by adding one same starting frequency point specified by the channelized set to a frequency offset obtained according to a sequence number of the basic channel; and establishing, by the wireless station, a network according to the selected working channel and primary channel. selecting, by a wireless station, a working channel and a primary channel which satisfy a bandwidth requirement and an interference level in a channelized set within a given frequency band according to local configuration information and/or through channel scanning and interference detection, wherein the local configuration information includes a supportable channelized set, a bandwidth of a working channel, a primary channel of a working channel; calculating a central frequency point of the primary channel of the working channel through the following methods according to the local configuration information: in a given frequency band, utilizing two or more channelized sets to indicate different channelization schemes in a scope of frequencies which are mutually overlapped or partially overlapped, wherein in one channelized set, any two available basic channels are not overlapped at all and an interval between central frequency points of any two available basic channels is an integer multiple of an interval between basic channels; specifying a unique identification number for each channelized set, or, in a superset consisting of all channelized sets satisfying a frequency planning area code, specifying for each channelized set a unique identification number within a scope of the superset; and for a primary channel of any available channel in a channelized set, calculating a central frequency point by adding one same starting frequency point specified by the channelized set to a frequency offset obtained according to a sequence number of the basic channel; and in a given frequency band, utilizing two or more channelized sets to indicate different channelization schemes in a scope of frequencies which are mutually overlapped or partially overlapped, wherein in one channelized set, any two available basic channels are not overlapped at all and an interval between central frequency points of any two available basic channels is an integer multiple of an interval between basic channels; specifying a unique identification number for each channelized set, or, in a superset consisting of all channelized sets satisfying a frequency planning area code, specifying for each channelized set a unique identification number within a scope of the superset; and for a primary channel of any available channel in a channelized set, calculating a central frequency point by adding one same starting frequency point specified by the channelized set to a frequency offset obtained according to a sequence number of the basic channel; and establishing, by the wireless station, a network according to the selected working channel and primary channel.