Study of seismic hazard zoning in earthquake prone regions is essential for development of structural design codes, economic planning on the loss of a probable earthquake, seismic risk estimation and management, it should be expressed in terms of earthquake ground-motion parameters. In this study, to perform seismic hazard zoning in Ilam area, an area bounded between 32.3°-35.4°N and 44.8°-49°E has been investigated. After removing dependent events from the earthquake catalog, an area source model containing 7 potential seismic sources has been detected and magnitude incompleteness of earthquake data and seismicity parameters were determined at each of the sources. Acceleration of the ground motion, calculated by three equations of prediction of the ground motion with the same weight. Hazard maps for PGA show that in both return periods of 50 and 475 years, the eastern and southeastern parts of the Ilam province are more accelerated than other parts of the province.