A rack system, comprising: a rack; a carried object having a first side and a second side, the carried object comprising a front part and a rear part, wherein the first side of the front part and the first side of the rear part of the carried object are substantially on a same plane, and the second side of the front part and the second side of the rear part of the carried object are substantially on a same plane, wherein the front part is formed with a space inside, and the first side of the front part has an opening communicated with the space; a first slide rail assembly and a second slide rail assembly respectively arranged at two opposite sides of the rack, each of the slide rail assemblies (26, 28) comprising a first rail and a second rail movable relative to the first rail, each of the first rails of the slide rail assemblies (26, 28) being mounted to a post of the rack through a bracket, and the second rail of the first slide rail assembly and the second rail of the second slide rail assembly being respectively mounted to the first side and the second side of the rear part; and characterized by: a supporting member (30, 200) fixedly and directly connected to one of the bracket and the post; wherein when the second rail is located at a retracted position relative to the first rail, the supporting member (30, 200) is configured to support the front part of the carried object; wherein the supporting member (30, 200) comprises a supporting part (48, 204), and the supporting part (48, 204) is horizontally arranged relative to a height direction of one of the bracket and the post; when the second rail is located at the retracted position, the supporting part (48, 204) is configured to support a bottom of the front part of the carried object; wherein the supporting member (30, 200) further comprises a connecting part, the connecting part (52, 202) is substantially perpendicularly bent relative to the supporting part (48, 204), and the supporting part (48, 204) is connected to one of the bracket and the post through the connecting part (52, 202). a rack; a carried object having a first side and a second side, the carried object comprising a front part and a rear part, wherein the first side of the front part and the first side of the rear part of the carried object are substantially on a same plane, and the second side of the front part and the second side of the rear part of the carried object are substantially on a same plane, wherein the front part is formed with a space inside, and the first side of the front part has an opening communicated with the space; a first slide rail assembly and a second slide rail assembly respectively arranged at two opposite sides of the rack, each of the slide rail assemblies (26, 28) comprising a first rail and a second rail movable relative to the first rail, each of the first rails of the slide rail assemblies (26, 28) being mounted to a post of the rack through a bracket, and the second rail of the first slide rail assembly and the second rail of the second slide rail assembly being respectively mounted to the first side and the second side of the rear part; and characterized by: a supporting member (30, 200) fixedly and directly connected to one of the bracket and the post; wherein when the second rail is located at a retracted position relative to the first rail, the supporting member (30, 200) is configured to support the front part of the carried object; wherein the supporting member (30, 200) comprises a supporting part (48, 204), and the supporting part (48, 204) is horizontally arranged relative to a height direction of one of the bracket and the post; when the second rail is located at the retracted position, the supporting part (48, 204) is configured to support a bottom of the front part of the carried object; wherein the supporting member (30, 200) further comprises a connecting part, the connecting part (52, 202) is substantially perpendicularly bent relative to the supporting part (48, 204), and the supporting part (48, 204) is connected to one of the bracket and the post through the connecting part (52, 202). a supporting member (30, 200) fixedly and directly connected to one of the bracket and the post; wherein when the second rail is located at a retracted position relative to the first rail, the supporting member (30, 200) is configured to support the front part of the carried object; wherein the supporting member (30, 200) comprises a supporting part (48, 204), and the supporting part (48, 204) is horizontally arranged relative to a height direction of one of the bracket and the post; when the second rail is located at the retracted position, the supporting part (48, 204) is configured to support a bottom of the front part of the carried object; wherein the supporting member (30, 200) further comprises a connecting part, the connecting part (52, 202) is substantially perpendicularly bent relative to the supporting part (48, 204), and the supporting part (48, 204) is connected to one of the bracket and the post through the connecting part (52, 202).