Problem to be solved: to provide a threshing structure of a combine which facilitates the reduction of the ability of the threading blade due to the wear of the spiral blade and the like so that the appropriate treatment for the wear of the spiral blade can be carried out easily and inexpensively.Solution: the breakage structure of a full culling type combine combine equipped with a spiral blade 43 for scraping and feeding the cutting warp fed to the front end 41 of the handling cylinder 16 toward the front end 41 of the treating cylinder 16 rearward as the handling cylinder 16 rotates.Diagram【課題】螺旋羽根などの摩耗に対する適切な処置を簡単かつ安価に行えるようにして、螺旋羽根などの摩耗に起因した脱穀処理能力の低下を回避し易くしたコンバインの脱穀構造を提供する。【解決手段】扱胴16の前端部41に、その前端部41に向けて供給搬送された刈取穀稈を、扱胴16の回転に伴って後方に向けて掻き込み搬送する螺旋羽根43を装備してある全稈投入型コンバインの脱穀構造。【選択図】図4