《旅順博物館所藏甲骨》收錄二千餘版甲骨，其中背甲有三百三十餘片，所佔數量是全書甲骨的百分之十四。背甲形態特殊，均較於腹甲、卜骨複雜，而《旅順博物館所藏甲骨》所公布的拓片、照片相當清楚，對於背甲研究甚為重要，可惜該書對於背甲材料的整理存在一些問題，本文分別就材質、分組分類、拓片、摹本、綴合等幾大項討論之，希望能提供研究者更完整的材料。

There are more than 2,000 pieces of Oracle Bone in Oracle Bone Collections in Lvshun Museum, where Carapaces account for about 330 pieces—14% of the oracle bones in the collection. Carapace fragments are much more complicated than Plastron Fragments and Bovine Scapula Fragments due to their particular shapes. Thanks to the clear rubbing and photographs published in the collection, it contributes a lot to the research of carapace fragments. However, there still are some issues in the organization and grouping of Carapaces in this collection. This paper aims to discuss the material, classification, rubbing, hand copy, and rejoining in Oracle Bone Collections in Lvshun Museum, hoping to help provide insight into Carapaces study for future researchers.