The irrigation technology of salt water mixed with fresh water, which use two different salinities of the irrigation water, isaimed to reduce the salt content or change its salt composition. The salt water mixed with fresh water for irrigation can not onlyincrease water quality, but also increase the total amount of irrigation water, so that the high-salinity water can be used. Accordingto an experimental study on salt water irrigation conditions in the Xingtai City plain and the technical analysis of salt-fresh watermixed irrigation, the salinity of mixture of salt water and fresh water can be control in the 3 g/L. In recent years, we carried outsome practice of salt-fresh water mixed irrigation. The results show that salt-fresh water mixed irrigation can make full use saltywater resources, reduce the amount of fresh water exploitation and improve the local ecological environment.