The present invention relates to a home gateway access management method and system. The method comprises: a home gateway (HGW) sending to a wireless access gateway (WAG) a query message of an international mobile subscriber identity (IMSI) of a mobile phone carrying a newly established wireless fidelity (WiFi) link, and querying an authentication result of the mobile phone to the WAG; and the HGW receiving a response message carrying the authentication result of the mobile phone and returned by the WAG, and controlling WiFi link data transmission of the mobile phone according to the authentication result.