Open convenient packing box

The utility model discloses an open convenient packing box, including bottom plate, left side plate portion, right side plate portion, go up side plate portion, side plate portion down, the packing box is cuted the local embedding mutually in folding back and each other is blocked integrated into one piece by a slice cardboard, left side plate portion passes through bending left side outer panel,left case lid, right side plate portion includes right outer panel, right case lid, left case lid uses and can approximately close the purpose that realizes the joint sealing with the cooperation of right case lid, corresponds on left case lid and the right case lid and has laid a plurality of calories of holes, going up side plate portion and folding into a lid and locate the first joint sealingboard in left case lid and the right casing cover connection department through tailorring, lower side plate portion is equipped with second joint sealing board through tailorring to roll over, thereby first joint sealing boar