A slide rail assembly includes a first rail, a second rail, a blocking feature, and a component. The two rails can be displaced with respect to each other. The blocking feature is provided at one of the two rails, and the component at the other of the two rails. When the second rail is at a predetermined position with respect to the first rail, a blocking portion of the blocking feature and a predetermined portion of the component are blocked by each other to prevent the second rail from being displaced with respect to the first rail from the predetermined position in a predetermined direction. One of the blocking portion and the predetermined portion forms a non-vertical structure.