A service switching method, device and system for a local communication network are described. The method includes that: a current terminal receiving a service switching starting instruction sends running service information to a selected target terminal, and sends a service switching request message to a server; the server receiving the service switching request message sends service information to the target terminal; the target terminal extracts service progress time from the service information sent by the current terminal and the service information sent by the server respectively, calculates a time difference according to the extracted service progress time, and sends the time difference to the server; and the server regulates a progress of the service information sent to the target terminal according to the time difference to make the progress consistent with a progress of the service information sent to the selected target terminal by the current terminal. By the disclosure, a service can be smoothly switched, and service discontinuity can be avoided.