A locking mechanism includes a housing, a hinge, a fastening member, and an actuating member. The housing defines a receiving space therein and is formed with a through hole. The hinge includes a connecting support disposed in the receiving space and a rotary member operable to pivot relative to the connecting support, and having an engaging segment. The fastening member is disposed in the receiving space, is registered with the through hole, and is formed with an engaging slot for engaging the engaging segment. The actuating member removably extends into the through hole and is operable to actuate the fastening member to move between locked and unlocked positions, where the engaging segment and the engaging slot are engageable and non-engageable, respectively.