Method and system for switching wireless devices in looped network

The disclosure discloses a method and system for switching wireless devices in a looped network. The wireless devices include a core wireless device and remote wireless devices, and the core wireless device and two or more remote wireless devices, connected through two ports of the core wireless device, constitute a looped network; the method including: when the core wireless device detects that a line error rate at each of the two ports is within a determined threshold range, the core wireless device sends a valid control character, otherwise, the core wireless device sends an invalid control character; wherein the valid control character sent at one of the two ports of the core wireless device is different from that sent at another of the two ports of the core wireless device; when the remote wireless device detects that a line error rate at a receiving end of a master port of the remote wireless device is within the determined threshold range, the remote wireless device forwards the valid control character received at a slave port to the master port, otherwise, the remote wireless device sends the invalid control character to the master port; and the remote wireless device sends the invalid control character to its slave port continuously. With the present disclosure, the stability of the networking mode through the RRUs is promoted.