Abstarct: The Salmas fault and its surroundings is part of the Sanadaj-Sirjan zone northwest of IRAN. Stratigraphic studies in this area illustrate the existence of Kahar, Roteh and Qom formations with NW-SE trend. Travertine and quaternary sediments are the youngest rock units in the studied area. Evidence of normal movement of the Salmas fault was observed in the North of Shurgol village with displacement in the Kahar Formation and also creating a fault scarp with N70W trend in Molham village. The morphologic evidences such as displacement of the rivers by the Salmas fault, and also the fractures created by the fault in the travertine sediments indicate a young displacement in Neotectonic-Quaternary time. These evidences confirm a normal with right lateral strike-slip component mechanism for Salmas fault. Moreover, the May 7, 1930 was associated with the movement of this fault, indicates that the fault is an earthquake fault. The Shekaryazi fault which can be traced at 16 km NE of Salmas fault (with NW – SE trend) is a reverse fault with the same mechanism and structural domain. Salmas city and its suburbs have been exposed in the movements of both faults. May 7, 1930 earthquake in Salmas (due to Salmas fault movement) and May 9, 1930 earthquake in Shekaryazi (due to Shekaryazi fault movement) show that these faults are sympathetic and the movement of one of them can cause the movement of the other one.