A network capability invoking method comprising: - registering, by an application server, with a capability enablement platform of a mobile operator, wherein, in a registration process, the capability enablement platform allocates an application service identifier to the application server, so as to uniquely identify the application service in the capability enablement platform; - integrating, by the application server, a network capability API into an HTML page, wherein the API provided by the capability enablement platform is a charge deduction API of a RESTFUL style, and the API includes address information of the capability enablement platform, wherein, when integrating the API into the HTML page, the application server provides a service description corresponding to the API; and - when a user requests, via a user equipment, using HTTP, a download address of an application service instance that charges a fee, ∘ returning, by the application server to the user equipment, the HTML page that includes the download link of the service instance that charges a fee and the charge deduction API that is bound to the download address included in the the download link, where the charge deduction API includes an application service identifier, service instance information, and the address information of the capability enablement platform; ∘ when the user clicks the download link of the service instance that charges a fee, triggering, by a browser in the user equipment, invoking of the API according to a binding relationship between the charge deduction API and the link to the service instance, and; requesting, by the browser in the user equipment, according to the address information of the capability enablement platform that is included in the charge deduction API, the capability enablement platform to perform charge deduction on traffic of the service instance, where the request includes service instance identification information of the service instance, the file size of the service instance, and an identifier of the application service, and the request is carried in the HTTP or HTTPs protocol. - registering, by an application server, with a capability enablement platform of a mobile operator, wherein, in a registration process, the capability enablement platform allocates an application service identifier to the application server, so as to uniquely identify the application service in the capability enablement platform; - integrating, by the application server, a network capability API into an HTML page, wherein the API provided by the capability enablement platform is a charge deduction API of a RESTFUL style, and the API includes address information of the capability enablement platform, wherein, when integrating the API into the HTML page, the application server provides a service description corresponding to the API; and - when a user requests, via a user equipment, using HTTP, a download address of an application service instance that charges a fee, ∘ returning, by the application server to the user equipment, the HTML page that includes the download link of the service instance that charges a fee and the charge deduction API that is bound to the download address included in the the download link, where the charge deduction API includes an application service identifier, service instance information, and the address information of the capability enablement platform; ∘ when the user clicks the download link of the service instance that charges a fee, triggering, by a browser in the user equipment, invoking of the API according to a binding relationship between the charge deduction API and the link to the service instance, and; requesting, by the browser in the user equipment, according to the address information of the capability enablement platform that is included in the charge deduction API, the capability enablement platform to perform charge deduction on traffic of the service instance, where the request includes service instance identification information of the service instance, the file size of the service instance, and an identifier of the application service, and the request is carried in the HTTP or HTTPs protocol. ∘ returning, by the application server to the user equipment, the HTML page that includes the download link of the service instance that charges a fee and the charge deduction API that is bound to the download address included in the the download link, where the charge deduction API includes an application service identifier, service instance information, and the address information of the capability enablement platform; ∘ when the user clicks the download link of the service instance that charges a fee, triggering, by a browser in the user equipment, invoking of the API according to a binding relationship between the charge deduction API and the link to the service instance, and; requesting, by the browser in the user equipment, according to the address information of the capability enablement platform that is included in the charge deduction API, the capability enablement platform to perform charge deduction on traffic of the service instance, where the request includes service instance identification information of the service instance, the file size of the service instance, and an identifier of the application service, and the request is carried in the HTTP or HTTPs protocol.