The present disclosure relates to a method and a device for triggering a specified operation, and belongs to the field of smart home technologies. The method includes obtaining a wireless signal received by a receiving device and sent by a specified signal source, determining whether a disturbance occurs in the first wireless signal, obtaining a signal quality characteristic of the wireless signal if it is determined that a disturbance occurs in the wireless signal; determining whether the signal quality characteristic matches with predetermined characteristic sample; and triggering the intelligent device to perform the specified operation if the signal quality characteristic matches with the predetermined characteristic sample.
