port Genaveh one of the small ports on the north coast of the Persian Gulf and is located in Bushehr province, and of the distant past has been active in the field of fishing and trade. Basin of the port in terms of the estuary Ganaveh is known for providing acceptable mooring, over time the development of the relative and now plan to develop the port into a free zone tourists and businesspersons under investigation. Considering that so far no study to examine the concentration and origin of petroleum hydrocarbons entire surface sediments Port Ganaveh been done, in October 1393 compared to the sampling of 11 stations along the estuary and a station outside the estuary as the control station, was used. Using gas chromatography measurement of the concentration of total petroleum hydrocarbons, and oil pollution area was determined using a standard situation. Finally, using some of the sources of pollution indices were developed. The results showed that except for three last station, the closest station to the shore of the sea and due to greater exchange marine lower concentrations are deposits other stations to suit all standards in a state of severe pollution of oil are such that an average of 9 stations first ppm 1542 respectively. Using indicators of the normal alkanes, the pollution source identification. The results showed that the origin of all oil pollution in this area is that in most cases due to mooring, engine washing, repairing dhow floats, and ships and unloading fuel is in the port.