In order to explore a more reasonable way of cultivation，the watersalt dynamic under different planting patterns was studied in saline soil of northern Shanxi.Field trials were conducted in forage maize land with five treatments:bare land(CK)as the blank control，flat film(F)，plastic film mulching(P)，plastic film mulching(Pr)and double furrow(Pt).Results indicated that Pt pattern had a better waterretaining effect，especially in 0~40 cm soil layercompared with CK，F，P，Pr treatments，soil moisture of Pt treatment increased by 30.73%，27.63%，29.05% and 19.96%，respectively.The results showed that Pt treatments continuously inhibited soil salt moving up during the period of maize growth.In comparison with CK，F，P，Pr treatments，the soil electrical conductivity value of Pt treatment decreased by 31.30%，31.77%，24.42%，10.47% in 0~40 cm soil layer，and decreased by 20.95%，11.61%，7.61%，5.60% in 40~100 cm soil layer.Moreover，pH value was one of the important indexes of saline soil.The results also illustrated that Pt treatment lowered the pH value of 0~20 cm soil layer，but there was little impact on 20~100 cm soil layer.Further，the forage maize yield in Pt treatment had higher production.Contrasted to F，P and Pr treatments，the yield increased by 36.62%，24.56% and 10.98%.It was concluded that Pt pattern had more powerful capacity of holding soil water，effectively inhibited soil salt increasing in the period of maize growth，promoted maize growth and increased forage yield，which could be used as a reasonable planting pattern for saline land of northern Shanxi.