Penetrating type storage shelf

The utility model relates to a through type storage shelf which comprises a plurality of shelf body units, each shelf body unit comprises two rows of supporting rods which are symmetrically arranged, a cross beam used for placing a goods tray is arranged between the two rows of supporting rods, the cross beam is fixedly connected with the supporting rods on the corresponding sides, and protection devices are arranged at the bottoms of the supporting rods. The protection device comprises a base, a plurality of protection rods and a movable disc, the base is fixedly connected with the lower end of the supporting rod, the movable disc is arranged on the supporting rod in a sleeving mode, a fixing hole is formed in the movable disc, the lower ends of the protection rods are in threaded connection with the base, the upper ends of the protection rods are fixedly connected with threaded rods, and the threaded rods penetrate through the fixing hole. The threaded rod is in threaded connection with a fixing nut. The mo