A network access method, comprising: a user equipment, UE, receiving wireless local access network, WLAN, access auxiliary information transmitted by a 3 rd Generation Partnership Project, 3GPP, access network; said UE performing a measurement and an access judgment based on said WLAN access auxiliary information and obtaining a judgment result; said UE accessing to said WLAN according to said judgment result; wherein, said UE performing said measurement and said access judgment according to said WLAN access auxiliary information comprising: said UE measuring said WLAN's signal quality according to said WLAN access auxiliary information; characterized by, said UE performing an access judgment according to said WLAN's signal quality and acquired WLAN access condition to obtain said judgment result; wherein, said WLAN access auxiliary information comprises: said WLAN's Basic Service Set Identifier, ChannelList detected when said UE scans said basic service set, ProbeDelay before sending a probing frame when said UE performs an active scanning, MinChannelTime taken by said UE scanning each channel, MaxChannelTime taken by said UE scanning each channel, and priorities of WLAN access points; and said WLAN access condition is judged out by said UE after said UE performs comprehensively sorting according to acquired information items including WLAN's signal quality measurement result, WLAN's load information, and priorities of WLAN access points. a user equipment, UE, receiving wireless local access network, WLAN, access auxiliary information transmitted by a 3 rd Generation Partnership Project, 3GPP, access network; said UE performing a measurement and an access judgment based on said WLAN access auxiliary information and obtaining a judgment result; said UE accessing to said WLAN according to said judgment result; wherein, said UE performing said measurement and said access judgment according to said WLAN access auxiliary information comprising: said UE measuring said WLAN's signal quality according to said WLAN access auxiliary information; characterized by, said UE performing an access judgment according to said WLAN's signal quality and acquired WLAN access condition to obtain said judgment result; wherein, said WLAN access auxiliary information comprises: said WLAN's Basic Service Set Identifier, ChannelList detected when said UE scans said basic service set, ProbeDelay before sending a probing frame when said UE performs an active scanning, MinChannelTime taken by said UE scanning each channel, MaxChannelTime taken by said UE scanning each channel, and priorities of WLAN access points; and said WLAN access condition is judged out by said UE after said UE performs comprehensively sorting according to acquired information items including WLAN's signal quality measurement result, WLAN's load information, and priorities of WLAN access points. said UE measuring said WLAN's signal quality according to said WLAN access auxiliary information; characterized by, said UE performing an access judgment according to said WLAN's signal quality and acquired WLAN access condition to obtain said judgment result; wherein, said WLAN access auxiliary information comprises: said WLAN's Basic Service Set Identifier, ChannelList detected when said UE scans said basic service set, ProbeDelay before sending a probing frame when said UE performs an active scanning, MinChannelTime taken by said UE scanning each channel, MaxChannelTime taken by said UE scanning each channel, and priorities of WLAN access points; and said WLAN access condition is judged out by said UE after said UE performs comprehensively sorting according to acquired information items including WLAN's signal quality measurement result, WLAN's load information, and priorities of WLAN access points.