Data line easy to dissipate heat and data line interface

The data line comprises a shell and a data line folded in the shell, a plurality of sliding blocks are arranged in the shell in a sliding mode, the data line is wound around the outer sides of the sliding blocks in sequence, a rotating shaft is arranged in the shell in a rotating mode, the rotating shaft penetrates through the sliding blocks and is in sliding fit with the sliding blocks, and the sliding blocks are arranged in the shell in a sliding mode. A first spring is arranged on the outer side of the rotating shaft and located between the sliding block and the shell in a sleeving mode, the rotating shaft and the sliding block are connected through a limiting assembly, and a clamping assembly matched with the shell is arranged on the rotating shaft. Through cooperation of the limiting assembly and the clamping assembly, the rotating shaft can sequentially move towards the center line direction of the shell in the data line extraction process, so that the problem that multiple sliding blocks slide together