This is to provide a medical-use adhesive having self-degradation property that enables sufficient adhesion even on wet living body portion, to which body fluid such as blood oozes out heavily, and even especially when the wet living body portion is arranged along a vertical plane. This is to provide also a medical-use adhesive excellent in obliteration of a pinhole. A first part of two-part adhesive is powder of aldehyde-groups-introduced alpha-glucan having a weight-average molecular weight in a range of 1000 to 200,000. A second part of two-part adhesive is aqueous solution or powder of amino-groups-containing polymer that is formed of a polymer chain of amino-group-containing units and has a molecular weight in a range of 1000 to 20,000. A mixture of the first and second liquids at a time of mixing them has pH in a range of 5.0 to 8.0.
