A data line convenient for storage includes a data line body (1); a plurality of magnetic rings (2) sleeve on the data line body (1); and a plurality of limit tube (3). Each limit tube (3) is arranged between each two adjacent magnetic rings (2). Two opposite ends of each limit tube (3) respectively abuts against the two adjacent magnetic rings (2). When the data line is coiled and stacked into a multiple-layer structure, the magnetic rings (2) located at two adjacent layers attract each other. The magnetic rings (2) at two adjacent layers can attract each other to fix the adjacent layers tightly for storage. The data line is simple in structure, each to use and properly designed to improve user experience.