In order to research the difference between continuous infiltration and intermittent infiltration of fresh water and saline water, one-dimensional infiltration experiments of continuous and intermittent water with salinity of 1.33g/L for fresh water and 3g/L for saline were carried out in clay soil. The results showed that saline water can influence soil structural characteristics and enhance infiltration capacity. One dimensional infiltration modeling analysis showed that the model is able to describe the process of saline water infiltration exactly. Intermittent infiltration of fresh water had an effect of reducing infiltration, however, intermission infiltration of saline water had an effect of increasing infiltration. There existed slight difference in infiltration-reducing and infiltration-increasing effect for various circulation rate of intermission infiltration.