An electronic device includes a first body, a supporting arm, at least one first hinge, a first coupling member and at least one second coupling member. The first hinge is connected between the first body and the supporting arm. The supporting arm can rotate relatively to the first body through the first hinge. The first coupling member is disposed in the first body. The second coupling member is disposed in the supporting arm. When the second coupling member moves to at least one predetermined position, the first coupling member and the second coupling member are attracted by each other.