The invention discloses a central material storage box of a high-capacity automobile. The central material storage box comprises a sundry box outer plate body, a buckle rotating shaft, a reset spring,a sundry box outer plate buckle, a damper mounting base, a damper, a latch, a sundry box inner plate, a sundry box outer plate skeleton and a rotating shaft, wherein the sundry box outer plate body and the sundry box outer plate skeleton are molded through injection and are welded through vibration friction welding, the welding quantity is 1.2 mm, the welding motion direction is up-down, the motion stroke is 1 mm, and the left and the right are limited through ribs; a welding platform is arranged at the part where the angle of welding contact surfaces is too large, and the angle of the contact surfaces of upper and lower products is guaranteed to be smaller than 30 degrees; the sundry box outer plate buckle, the buckle rotating shaft, the reset spring and the latch form a sundry box locking mechanism; the sundry box inner plate is molded through injection; the sundry box inner plate, the latch and the damper mounting base are fixed through bolts; the sundry box inner plate and the sundry box outer plate skeleton are connected with the damper through the rotating shaft. The central material storage box has the advantages that the storage space is large, the man-machine function isreasonable, the curvature of an outer molding surface is large, and the like.