Drive-in racking, also known as corridor shelves and through-type shelves, are a typical continuous whole-building shelf that does not require a forklift passage. Compared with ordinary shelves, drive-in racking have a very significant improvement in the utilization of warehouse storage space. The effective space utilization rate can be increased to up to 90%, and the site area utilization rate can reach more than 60%. However, the same operating channel The goods inside cannot be first in first out.