<p>Melting point lowering member (54) is disposed between stud (2) and work (3). The melting point lowering member (54) consists of a metal material capable of eutectic reaction with the metal material constructing the stud (2) and work (3). The stud (2) is rotated in the state of being pressed against the work (3) via the melting point lowering member (54) to thereby generate frictional heat, so that the linking site between the stud (2) and work (3) and the melting point lowering member (54) are melted by eutectic reaction. The rotation of the stud (2) is discontinued to thereby accomplish junction of the stud (2) to the work (3). In this manner, with a slight press force, joining of a junction member to a member to be joined can be accomplished with high reliability without detriment to working environment.</p>
