The invention provides a method for switching communication devices. At least one environmental parameter of an adjacent area of a mobile communication device is measured at first according to the method, and judgment whether the mobile communication device is arranged indoors is made based on the at least one environmental parameter, then the following steps are executed if the mobile communication device is arranged indoors: firstly, the method establishes a wireless communication link between the mobile communication device and a substituted communication device; secondly, the method sendsuser information of the mobile communication device to the substituted communication device; thirdly, the method terminates a first wireless communication link between the mobile communication deviceand a base station; and fourthly, the method establishes a second wireless communication link between the substituted communication device and the base station under a wireless communication protocol.