Service capability authentication method, equipment and system

The embodiment of the invention discloses a service capability authentication method, equipment and system. The method comprises the steps that service capability request information for packaging a service capability client side SDK is called, wherein the service capability request information comprises an information head and an information body, and the information head carries service capability identification and authentication parameters; the service capability request information is sent to a service capability gateway through a hypertext transfer protocol, so that the service capability gateway reads the information head and carries out authentication on the authentication parameters in the information head. According to the method, the equipment and the system, the authentication overhead of the service capability gateway can be reduced, and the authentication efficiency is promoted.