A slide rail assembly includes a first rail, a second rail, a returning device and a connecting device. The returning device is arranged on the first rail and includes an elastic member and a movable member. The connecting device is arranged on the second rail and includes a first connecting member and a second connecting member. During a process of the second rail being moved relative to the first rail from an extended position along a retracting direction, the second connecting member is configured to contact the movable member, in order to drive the movable member to switch from a second state to a first state. Accordingly, the second rail is configured to be driven to move to a retracted position by an elastic force of the elastic member.