An electronic device for changing a notification mode and a method therefor are provided. The electronic device includes communication circuitry, at least one processor, and a memory. The memory stores instructions, when executed, configured to cause the at least one processor to establish communication with a wearable device through the communication circuitry, and upon identifying a change in an operation state of the wearable device, change from a first notification mode of the electronic device to a second notification mode according to the identified operation state of the wearable device.