Abstract: Based on the monitoring and evaluation of soil salination in the coastal region of Liaodong Bay,this paper found that the severe soil salination areas of Liaodong Bay mainly distribute in the muddy coast in the north of Liaodong Bay,and with the same distribution characteristic of seawater intrusion.But in the east and west of Liaodong Bay,there is almost no soil salination phenomenon.Through the analyzing of the monitoring data,this paper come to the conclusion that the relationship model between the salinity and conductivity.The method of conductivity can be used as a fast method to monitor soil salination phenomenon in this area.