The invention provides a dynamic self-adapting method for the connection of a Web RTC (Real Time Communication) client, belonging to the technical fields of a Web RTC, an HTML (Hypertext Markup Language) 5 web Socket and the like. An entity related by the method comprises a Web RTC client, a browser and a real-time communication server, wherein the Web RTC client can support three connecting ways, including an HTTP (Hyper Text Transport Protocol) polling, an HTTP long connection and a Web Socket, and the HTTP long connection comprises an HTTP stream; according to the method, the connecting way with lowest delay of the HTTP polling, the HTTP long connection and the Web Socket can be optimally selected, and the Web RTC client and the real-time communication server are connected by using the connecting way with the lowest delay. Under the premise of guaranteeing timeliness, the communication delay can be reduced, the functions of the client can be enhanced, and the intelligence of the client can be improved.