The invention discloses a method and a system for triggering to seek help. A trigger terminal obtains a trigger signal and arranges the trigger signal into a first data packet; the first data packet is transferred into a first voice packet, which is transmitted outwards in a broadcast manner. According to the method and the system for triggering to seek help in the invention, the trigger signal isreceived and generated through a trigger button on the trigger terminal; the trigger signal activates a trigger processing unit; the trigger processing unit arranges the trigger signal into the firstdata packet and transmits the first data packet to a main control unit; the main control unit synthesizes the corresponding voice information according to the content or property of the trigger signal and transmits the voice information to a voice interphone module; the voice interphone module instantly broadcasts the voice information to the voice interphones nearby, thereby achieving the emergency calling function within a local range.