To provide steel-pipe sheet piles shortening spans among mutual steel pipes constituting the sheet piles and being proper to a rotary press-in construction method without the turbulence of a peripheral ground by joints.

In the rotary press-in steel-pipe sheet pile 1, a pile body is formed of a lower steel pipe 2 and an upper joint steel pipe 3 having a diameter larger than the lower steel pipe 2. In the steel-pipe sheet pile 1, end excavating blades 5 are installed at the lower end of the lower steel pipe 2, and groove- shaped female type connecting joints 8 extended in the pile longitudinal direction are formed on both side faces of the upper joint steel pipe 3. The lower steel pipe 2 and the upper joint steel pipe 3 are connected by a tapered diameter- expanding steel pipe 4, and intermediate excavating blades 6 are mounted near the upper end of the lower steel pipe 2.