To provide a medical gauze which is difficult for an X-ray opaque filament to fall off from a gauze main body by a simple constitution and a medical gauze which is easy to be easily woven with an existing facility and is hard to fall off .SOLUTION: This gauze body is composed of a gauze body consisting of alternating intersections of warp yarns 14 and weft yarns 15 and a gauze for medical use having an X-ray opaque filament 20 in the gauze body, wherein the X-ray opaque filament 20 is a warp of the gauze body Woven in a structure involving weft and weft. One or a plurality of wefts penetrate through the entanglement portion of the X-ray opaque filament and the warp.(FIG.【課題】簡易な構成によりX線造影糸がガーゼ本体から脱落しにくい医療用ガーゼ、また、既存の設備を用いて簡単かつ容易に織成できるX線造影糸が脱落しにくい医療用ガーゼを提供する。【解決手段】経糸14と緯糸15の交互の交差からなるガーゼ本体と、ガーゼ本体にX線造影糸20を備えた医療用ガーゼであって、X線造影糸20がガーゼ本体の経糸の一本と緯糸とに絡んだ構造で織り込まれている。X線造影糸と経糸の絡み部位には緯糸が一本又は複数本貫通している。【選択図】図2