An audio/video streaming signal provision method and an audio/video streaming signal sharing system for use with Internet. The sharing system includes a service management server, multiple sharers and at least a user. The audio/video streaming signal provision method includes the following steps. The user communicates with the service management server through Internet. The service management server generates a sharer set comprising at least the sharer according to an identification data of the user. The user issues a request to the sharer through the service management server. The sharer transmits an audio/video streaming signal to the user through Internet in response to the request.