The invention discloses a slidable hinge. The slidable hinge comprises a sliding hinge body which is installed on a fixed panel and can slide up and down along the fixed panel and an overturning hingebody fixedly connected with an overturning panel, the overturning hinge body and the sliding hinge body are connected together through a hinge pin, and the hinge pin is limited by a shaft check ring.According to the slidable hinge, the sliding hinge body is arranged on the fixed panel of a machine cabinet subrack, the machine cabinet subrack overturning panel needing to be overturned and the overturning hinge body are fixedly connected, and the overturning hinge body and the sliding hinge body are connected together through the hinge pin. When the overturning panel does not need to be overturned, the sliding hinge body downwards slides to the lower limit position on the fixed panel under the action of gravity, and at that time, seamless joint of the fixed panel and the overturning panelcan be achieved; and when the overturning panel needs to be opened, the sliding hinge body is lifted to the upper limit position of the fixed panel, and the overturning hinge body and the overturningpanel are turned over by 90 degrees, and then the overturning panel can be demounted.