To surely connect an infilled steel-pipe concrete column and a beam simply at a low cost.

In the connecting structure of the infilled steel-pipe concrete column 2, in which the inside of a column steel pipe 3 is filled with concrete 10, and a beam (a footing beam) 1, a root-winding steel pipe 4 is installed concentrically on the column base section of the column steel pipe 3 and arranged on the beam, and connecting members 5 fixed onto the beam 1 are inserted into an annular opening between the column steel pipe 3 and the root-winding steel pipe 4 while the opening 6 is filled with concrete 7 and the connecting members 5 are fixed. Other connecting members 9 extending between the beam 1 and the column base section is mounted into the column steel pipe 3 in addition to or in place of the connecting members 5. Studs 8 are fitted onto the external surface of the column base section of the column steel pipe 3. The height size of the root-winding steel pipe 4 is set in the outside-diameter size D or more of the infilled steel-pipe concrete column 2. Anchor members in which fixing head sections are formed integrally at the end sections of reinforcements are used as the connecting members 5.