PROBLEM TO BE SOLVED: To provide a hydrogen gas dissolution method capable of efficiently utilizing hydrogen introduced into water in a bathtub and to provide a hydrogen gas holding tool for the same.SOLUTION: A hydrogen gas dissolution method where hydrogen gas generated in water at the lower part of a sheet body floated on the water surface of a bathtub is held and dissolved is characterized by increasing the flexibility of the center part of the sheet body than that of a peripheral edge part, moving hydrogen gas to the center part of the sheet body and holding hydrogen gas. A hydrogen gas holding tool for the bathtub is characterized by being made of the sheet body whose flexibility of the center part of the sheet body is increased than that of a peripheral edge part, moving hydrogen gas generated in water when being floated on the water surface to the center part and holding hydrogen gas.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2018,JPO&INPIT【課題】浴槽の水中に導いた水素を効率よく利用できる水素ガスの溶解方法及びこのための水素ガス保持具の提供。【解決手段】浴槽の水面に浮かべたシート体の下部に水中で発生した水素ガスを保持させて溶解させる水素ガス溶解方法である。シート体の中心部の可撓性をその周縁部よりも高め、水素ガスをシート体の中心部に移動させて水素ガスを保持させることを特徴とする。また、浴槽用の水素ガス保持具は、中心部の可撓性をその周縁部よりも高めたシート体からなり、水面に浮かべたときに水中で発生した水素ガスを中心部に移動させて水素ガスを保持することを特徴とする。【選択図】図3