A femtocell subscriber authentication method, wherein the method comprises: receiving, by a femtocell, an access request sent by an access terminal, wherein the access request carries International Mobile Subscriber Identity, IMSI, information of the access terminal; determining, by the femtocell, whether an IMSI of the access terminal is in a closed subscriber group, CSG, subscriber list of the femtocell; when the IMSI of the access terminal is in the closed subscriber group subscriber list, allowing the access terminal to access the femtocell; when the IMSI of the access terminal is not in the CSG subscriber list of the femtocell, obtaining, by the femtocell from a server, a mobile phone number corresponding to the IMSI; when the mobile phone number of the access terminal is not in the closed subscriber group subscriber list of the femtocell, requesting, by the femtocell, a management terminal to determine whether to allow the access terminal to access the femtocell; receiving, by the femtocell, a determining result, of the management terminal, of whether to allow access of the terminal, and determining, according to the determining result, whether to accept the access request of the access terminal; when the femtocell receives a determining result that the management terminal allows the access terminal to access the femtocell, sending, to the access terminal, a response message indicating that access is allowed; and when the femtocell receives a determining result that the management terminal does not allow the access terminal to access the femtocell, sending a response message indicating that access of the access terminal is rejected. receiving, by a femtocell, an access request sent by an access terminal, wherein the access request carries International Mobile Subscriber Identity, IMSI, information of the access terminal; determining, by the femtocell, whether an IMSI of the access terminal is in a closed subscriber group, CSG, subscriber list of the femtocell; when the IMSI of the access terminal is in the closed subscriber group subscriber list, allowing the access terminal to access the femtocell; when the IMSI of the access terminal is not in the CSG subscriber list of the femtocell, obtaining, by the femtocell from a server, a mobile phone number corresponding to the IMSI; when the mobile phone number of the access terminal is not in the closed subscriber group subscriber list of the femtocell, requesting, by the femtocell, a management terminal to determine whether to allow the access terminal to access the femtocell; receiving, by the femtocell, a determining result, of the management terminal, of whether to allow access of the terminal, and determining, according to the determining result, whether to accept the access request of the access terminal; when the femtocell receives a determining result that the management terminal allows the access terminal to access the femtocell, sending, to the access terminal, a response message indicating that access is allowed; and when the femtocell receives a determining result that the management terminal does not allow the access terminal to access the femtocell, sending a response message indicating that access of the access terminal is rejected.