The utility model relates to a rock core guard box in the rock core protection, including inner box and outer container two parts, the inner box includes strorage device, fixing device and case lid, the outer container includes roller device and damping device, its characterized in that: roller device place in guard box bottom through two gyro wheels, the gyro wheel adopts rubber materials, is equipped with bearing and bearing retainer between roller device and the damping device. Strorage device set up U type recess in that the guard box is inside, recess both ends and top set up fixing device. Fixing device include both ends spring and upper portion elasticity bundle case meshbelt lock. The damping device bottom of the case portion that adopts two -layer baffle including, set up the fixed matrix of spring and be connected with the outer container, the horizontal direction also links to each other inner box and outer container through spring assembly, makes the inner box suspend in the outer container under the fixing of spring. The utility model discloses rock core guard box simple structure, shock resistance can be good, is convenient for transport and deposit, and very big limit ground protection rock core does not receive the damage.