A cable management device includes a wiring body, having a first sidewall, a second sidewall and a groove rail, wherein the groove rail is formed between the first and second sidewalls and has a input end, a output end, and a corner between the input end and the output end. A first resisting element extends from one side of the first sidewall of the wiring body. A first elastic connecting element includes a first connecting part and a first elastic arm, wherein the first connecting part is connected between the wiring body and the first elastic arm. A second resisting element extends from one side of the second sidewall of the wiring body. A second elastic connecting element has a second connecting part and a second elastic arm, wherein the second connecting part is connected between the wiring body and the second elastic arm.