Phase equilibria in the Sm-Ru-Ge system were investigated by X-ray powder diffraction and the isothermal section at 1070 K was obtained. We confirmed the compounds CeGa 2 Al 2 -type SmRu 2 Ge 2 [a=0.4229(1) nm, c=0.9933(2) nm, space group I4mmm, No. 139], Y 3 Co 4 Ge 1 3 -type Sm 3 Ru 4 Ge 1 3 [a=0.9016(1) nm, space group Pm3n, No. 223], La 3 Ni 2 Ga 2 -type Sm 3 Ru 2 Ge 2 [a=0.5620(1) nm, b=0.7808(1) nm, c=1.3567(2) nm, space group Pbcm, No. 57], U 2 Co 3 Si 5 -type Sm 2 Ru 3 Ge 5 [a=0.9878(6) nm, b=1.2437(8) nm, c=0.5791(4) nm, space group Ibam, No. 72] and Zr 2 CoSi 2 -type Sm 2 RuGe 2 [a=1.0948(3) nm, b=1.0839(3) nm, c=0.4302(1) nm, γ=123.23(2) o , space group B2/m, No. 12-1]. We found the following new compounds: TiNiSi-type SmRuGe [a=0.7165(1) nm, b=0.4476(1) nm, c=0.7152(1) nm, space group Pnma, No. 62], CeRh 1 - x Ge 2 + x -type Sm 2 RuGe 5 - x [a=0.4061(2) nm, b=0.4179(2) nm, c=1.6226(7) nm, space group Pmmn, No. 59-2], Cr 5 B 3 -type Sm 5 Ru 2 Ge [a=0.7736(4) nm, c=1.3426(8) nm, space group I4/mcm, No. 140] and Tb 3 Co 2 Ge 4 -type Sm 3 Ru 2 Ge 4 [a=1.0899(9) nm, b=0.8139(8), c=0.4319(3) nm, γ=109.29(7) o , space group B2/m, No. 12-1]. The melting temperature for Sm 2 Ru 3 Ge 5 [T m =1760(10) K], Sm 3 Ru 4 Ge 1 3 [T m =1600(10) K], Sm 3 Ru 2 Ge 2 [T m =1560(10) K] and Sm 2 RuGe 2 [T m =1750(10) K] were measured.