Surface EXAFS has revealed that the sulfur atom is located at the 3-fold hollow site with the S-Ni distance of 2.13 Angstrom in (root 3 x root 3)R30 degrees S/Ni(111) phase and that the S-Ni bond of 2.18 Angstrom is more inclined and the coordination number is 4 in the (5 root 3 x 2) phase. A new reconstruction model consistent with EXAFS and STM is presented.