A method for nesting different types of services, characterized by comprising: a core network sending an INVITE message to a service proxy server according to subscription information of a user to initiate service trigger; and the service proxy server triggering a first application server AS1, of a service type according to the received INVITE message and preset configuration information, and further triggering a second application server, AS2, of another service type according to an event request message sent by the first application server, AS1, and/or the INVITE message sent by the core network and the configuration information; wherein, the first application server, AS1, is an application server bearing a Customized Applications for Mobile network Enhanced Logic, CAMEL, service, and the second application server, AS2, is an application server bearing a Session Initiation Protocol, SIP, service; and the service proxy server triggering the second application server, AS2, of another service type according to the event request message sent by the first application server, AS1, and/or the INVITE message sent by the core network and the configuration information comprises: when the service proxy server generates an InitialDP message to trigger the first application server bearing the CAMEL service, the first application server, AS1, sending an accounting request message to the service proxy server according to a service logic of the first application server, AS1, and the service proxy server generating the INVITE message to trigger the second application server, AS2, bearing the SIP service according to the accounting request message and/or the INVITE message sent by the core network, and the preset configuration information; or, the first application server, AS1, is an application server bearing an SIP service, and the second application server, AS2, is an application server bearing a CAMEL service; and when the service proxy server generates the INVITE message to trigger the first application server bearing the SIP service, the first application server sending an INVITE call request message to the service proxy server according to a service logic of the first application server, AS1, and the service proxy server generating an InitialDP message to trigger the second application server, AS2, bearing the CAMEL service according to the INVITE call request message and/or the INVITE message sent by the core network, and the preset configuration information. a core network sending an INVITE message to a service proxy server according to subscription information of a user to initiate service trigger; and the service proxy server triggering a first application server AS1, of a service type according to the received INVITE message and preset configuration information, and further triggering a second application server, AS2, of another service type according to an event request message sent by the first application server, AS1, and/or the INVITE message sent by the core network and the configuration information; wherein, the first application server, AS1, is an application server bearing a Customized Applications for Mobile network Enhanced Logic, CAMEL, service, and the second application server, AS2, is an application server bearing a Session Initiation Protocol, SIP, service; and the service proxy server triggering the second application server, AS2, of another service type according to the event request message sent by the first application server, AS1, and/or the INVITE message sent by the core network and the configuration information comprises: when the service proxy server generates an InitialDP message to trigger the first application server bearing the CAMEL service, the first application server, AS1, sending an accounting request message to the service proxy server according to a service logic of the first application server, AS1, and the service proxy server generating the INVITE message to trigger the second application server, AS2, bearing the SIP service according to the accounting request message and/or the INVITE message sent by the core network, and the preset configuration information; or, the first application server, AS1, is an application server bearing an SIP service, and the second application server, AS2, is an application server bearing a CAMEL service; and when the service proxy server generates the INVITE message to trigger the first application server bearing the SIP service, the first application server sending an INVITE call request message to the service proxy server according to a service logic of the first application server, AS1, and the service proxy server generating an InitialDP message to trigger the second application server, AS2, bearing the CAMEL service according to the INVITE call request message and/or the INVITE message sent by the core network, and the preset configuration information.