The utility model relates to the field of data connecting lines, in particular to a data connecting line with a protection structure. The utility model provides a data connecting line with a protection structure, which comprises a data connecting line and a data connector, the front end of the data connecting line is connected with the data connector, the data connecting line further comprises an installation shell, a protection sleeve, a sliding block, a damping shaft and the like, the installation shell is installed on the data connector, and sliding grooves are symmetrically formed in the left and right sides of the installation shell. The data connecting line is sleeved with a protective sleeve, sliding blocks are slidably connected into the two sliding grooves, and damping shafts are rotatably connected to the two sliding blocks. Through combined installation of the installation shell, the protection sleeve, the sliding block, the damping shaft, the rotating frame, the limiting frame, the spring and the clamping ball, effective protection of a gap between the data connecting line and the data connector can be achieved, the protection sleeve can cover and protect key parts, and damage caused by external stress is avoided.