Data memory with protection function

The invention discloses a data memory with a protection function. The data memory comprises a data storage box, side mounting seats are mounted on two sides of the data storage box, side plates are arranged on the backs of the side mounting seats, an optical cable socket is mounted on one side of the data storage box, and an optical cable plug is inserted into the inner wall of the optical cable socket; according to the data memory with the protection function, the situation that the data storage box is damaged due to instant combustion caused by short circuit of the optical cable plug due to thunder and lightning or high temperature generated by overload is prevented, fire extinguishing operation is carried out while pop-up protection of pulling out the optical cable plug is carried out on the data storage box, and the data storage box is convenient to use. According to the utility model, the damage of the data memory caused by the connection of the optical cable plug and the data loss are prevented to the g