PROBLEM TO BE SOLVED: To provide a packaging box with a partition in which an information transmission member hardly comes off from opening parts.SOLUTION: A box 1 (a packaging box with a partition) includes a piece of rectangular base paper in which an inner lid part 11, one side plate part 12, a bottom plate part 13, another side plate part 14, and an outer lid part 15 are connected with each other in this order with folding lines L1-L4 parallel to one side of the base paper as boundaries. By folding along each of the folding lines L1-L4, the outer lid part 15 is superposed on the inner lid part 11, so that a closed space is formed. In addition, the box 1 includes: a body part 10 in which the other sides of the base paper are formed as non-closed opening parts a partition 20 which is stuck on the inner surface of the bottom plate part 13 and has holding parts 22 allowing a plurality of respective commodities 31 (accommodated articles) to be put therein and capable of holding them and blocking pieces 11c (stopping parts) which are each accommodated in a space between the upper part of the holding part 22 and the inner surface of the inner lid part 11 and prevent an information transmission member 32 with given information described therein from coming off from the opening parts.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】情報伝達部材が開口部から抜け落ち難い仕切り付き包装箱を提供する。【解決手段】箱1(仕切り付き包装箱)は、1枚の長方形状の台紙において、内蓋部11、一方の側板部12、底板部13、他方の側板部14及び外蓋部15がこの順に、互いに台紙の一辺と平行な折り曲げ線L1~L4を境界として連結され、各折り曲げ線L1~L4での折り曲げにより、内蓋部11の上に外蓋部15が重ね合わされて閉じた空間が形成される一方、台紙の他辺側が閉鎖されない開口部とされた本体10と、底板部13の内面に貼付され、複数の商品31(収容物)をそれぞれ挟み込んで保持可能な保持部22を有する仕切り20と、保持部22の上部と内蓋部11の内面との隙間に収容される、所定の情報が記載された情報伝達部材32が開口部から抜け落ちるのを阻止する塞ぎ片11c(阻止部)と、を備える。【選択図】図3