A salt water irrigation test was carried out to study soil salt-water dynamics and its effect on crop yields under conditionsof different salt water irrigation systems and to further study the suitable system of salt water irrigation in the Huqu irrigation area of Yuncheng Basin. The results show that the suitable quota of salt water imigation ranged from 825 to 975m³/ha and the suitable irrigation was 4 times in the area with a mineralization degree changing from 1 to 3g/L, 2~3 times in the area with a mineralization degree ranging from 3 to 5g/L, and 1 time in the area with a mineralization degree ranging from 5 to 7g/L.