Abstract: An adjustable shelf including a first shelf unit, a second shelf unit, and a first locking device. The first shelf unit is rotatably connected with the second shelf unit through a first connector; the first locking device locks the first shelf unit to the second shelf unit; when the first locking device relieves the locking between the first shelf unit and the second shelf unit, the first shelf unit and the second shelf unit are able to rotate relatively, so that a customer can relieve the locking of the first locking device between the first shelf unit and the second shelf unit, and the customer can adjust the size and angle of the shelf by rotating the first shelf unit and/or the second shelf unit; the shelf can adapt to wall corners and wall surfaces in different sizes according to an actual condition and demand of the customer.