All Acceleration time histories, recorded during the destructive 26th December 2003 (M 6.6) Bam earthquake, have been simulated using a stochastic point source modeling technique proposed by Boore (Boore 1983, 2002). According this method simulate Bam earthquake in Abaragh station with 52 km and compare time series and acceleration and velocity and displacement spectra in simulated and observed earthquake and perceive good agreement between simulated and observed earthquake which confirm that selected source parameters were satisfactory reliable. Also the sensitivity of the PGA to the anelastic attenuation factor, Q(f), is studied.paper