This research focused on comparison of the concentration of poly aromatic hydrocarbons (PAHs) in the surface sediments of a spot near Caspian Sea. The evaluation was accomplished in summer and autumn. Then the achieved results were compared with PAHs concentrations and origins in some other similar marine areas of the world. The experiments were completed by SPSS software employed for data processing. Where of the data proceeded an abnormal manner, non-parametric and Mann-Whitney test were applied for further analysis. The results demonstrated that maximum values of PAH concentration in this station was much less than values represented by the other countries, particularly in the Caspian Sea border, except a few countries in the Persian Gulf border.