Disclosed herein is a refrigerator. The refrigerator includes a main body including a storage compartment, a door body rotatably coupled to the main body to open and close the storage compartment, and a front panel detachably coupled to the door body. The door body includes an upper cap including a trim receiving space. The front panel includes an upper trim inserted into the trim receiving space. A voice path is formed in the upper cap and a microphone module is provided in the upper trim to receive voice through the voice path.

An operation situation detection device includes: at least one microphone that is provided in a chamber to detect a first operation sound which is an operation sound occurring when a predetermined operation is performed in the chamber; a memory that stores in advance a second operation sound which is a typical sound likely to occur when the operation is performed; a calculator that calculates a similarity between the first operation sound and the second operation sound; and a determinator that determines that the operation has been performed, when the similarity is a predetermined value or higher.