A slide rail assembly , comprising: a first rail ; a second rail longitudinally movable relative to the first rail ; a blocking structure arranged on one of the first rail and the second rail ; and an adjusting device arranged on the other one of the first rail and the second rail , the adjusting device comprising an adjusting member , a working member and a fixing frame ; wherein the working member is configured to abut against the blocking structure , the adjusting member is configured to rotate to drive the working member to move linearly relative to the fixing frame , in order to adjust a position of the second rail along a longitudinal direction of the first rail when the second rail is retracted relative to the first rail ; wherein the fixing frame comprises a first wall and a second wall , a space is defined between the first wall and the second wall , the adjusting member is accommodated in the space, the adjusting member has a first side and a second side opposite to the first side, the first side has a shaft part connected to the first wall , a screwing part of the working member is screwed to the adjusting member from the second side, a contact part of the working member is located outside the space, and the working member is configured to abut against the blocking structure through the contact part ; characterized in that the working member further comprises a middle part connected between the screwing part and the contact part , and the second wall has a hole (H) allowing the middle part to penetrate through; wherein the hole (H) and the middle part have non-circular contours corresponding to each other. a first rail ; a second rail longitudinally movable relative to the first rail ; a blocking structure arranged on one of the first rail and the second rail ; and an adjusting device arranged on the other one of the first rail and the second rail , the adjusting device comprising an adjusting member , a working member and a fixing frame ; wherein the working member is configured to abut against the blocking structure , the adjusting member is configured to rotate to drive the working member to move linearly relative to the fixing frame , in order to adjust a position of the second rail along a longitudinal direction of the first rail when the second rail is retracted relative to the first rail ; wherein the fixing frame comprises a first wall and a second wall , a space is defined between the first wall and the second wall , the adjusting member is accommodated in the space, the adjusting member has a first side and a second side opposite to the first side, the first side has a shaft part connected to the first wall , a screwing part of the working member is screwed to the adjusting member from the second side, a contact part of the working member is located outside the space, and the working member is configured to abut against the blocking structure through the contact part ; characterized in that the working member further comprises a middle part connected between the screwing part and the contact part , and the second wall has a hole (H) allowing the middle part to penetrate through; wherein the hole (H) and the middle part have non-circular contours corresponding to each other. <EOS>