Two soil samples were selected to study the salt affected soil in Nenava province. Leaching experiment was study in laboratory. Sodium behavior during leaching process was contacted on two salt affected soil collected from (F10, N16) irrigation units of AL-Jazera project with four types of water (Distilled, Tigris water from AL-Rashidia district, well water from AL-Namrood and Khosser water) leaching was stopped when the leaching water collect 100 ml at 1 parts Each part 10 ml. The leachates extracts were analyzed for PH, Ec and cation (Na+, Ca++, Mg++).