PROBLEM TO BE SOLVED: To provide a collagen structure composed of a composition element of a plurality of collagen filaments arranged approximately parallel in which the adhesion strength of an adhesion part generated by bonding collagen filaments each other is strong.SOLUTION: In the collagen structure, a plurality of collagen filaments are arranged approximately parallel, the structure has an adjacent part in which collagen filaments abut each other, the adjacent part has at least one adhesion part in which the collagen filaments bond each other in a planar-wise, and whole collagen filaments is subjected to crosslinking treatment.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2018,JPO&INPIT【課題】略平行に配列した複数本のコラーゲン線状体を構成要素とするコラーゲン構造体であって、コラーゲン線状体同士が接着した接着部の接着力が強固なコラーゲン構造体の提供を課題とする。【解決手段】コラーゲン線状体複数本が略平行に配列し、コラーゲン線状体同士が隣接した隣接部を有し、当該隣接部においてコラーゲン線状体同士が面状に接着した接着部を少なくとも1箇所有し、コラーゲン線状体全体が架橋処理されたものである、コラーゲン構造体である。【選択図】図6