Digital information transmission data line connection anti-misplug fixing device

The utility model discloses a digital information transmission data line connection anti-misplug fixing device and relates to the technical field of digital information transmission. The device comprises a shell, wherein electromagnets are fixedly connected with inner walls of the top and the bottom of the shell, springs are fixedly connected with an inner wall of the shell and close to inner sides of the electromagnets, first dielectric plates are fixedly connected with inner sides of the springs, magnetic blocks are fixedly connected with middles of the first dielectric plates, and conductive columns are fixedly connected with inner sides of the first dielectric plates. The device is advantaged in that a rubber plate and a clamping groove are matched for use, after a connector is inserted into the shell, upon start of operation of a device,, the electromagnet works only when a data line is pulled out by mistake, the magnetic block bears the same-polarity repulsion acting force and drives a dielectric plate