Packing box that compressive strength is high

The utility model discloses a packing box that compressive strength is high, the packing box each other blocks integrated into one piece alright equipment and accomplishes through cuting the local embedding mutually in folding back, the bottom plate is included, the folding last case lid board of going up the case lid, lower box cover board, left side board, the right side board that can follow the folding formation lower box cover of backfin line of forming of backfin line can be followed, going up the case lid and being equipped with the first tongue, second inserted and inserting the tongue, lower box cover is equipped with that the tongue is inserted to the third, the tongue is inserted to the fourth, the left side board is including the left side frame, first backup pad, thereby is equipped with in the backfin line department of first backup pad and the left side frame and supplies first tongue and the third inserted to insert the tongue card and insert and interiorly have the fixed action and then reali