The effect of the infiltration process with initial moisture contents of 2.25%, 8.18%, 13.12% and 16.40% was examined by indoor uniformity earth pillar experiments. The infiltration water mineralization degree was 3g/L. Both cumulative infiltration and wetting front vs. time with different initial moisture contents infiltrated by saline water were analyzed. Fitting the relationship between cumulative infiltration and time with Kostiakov model, the results showed that the initial moisture content and soil infiltration capacity were negatively correlated. The relationship between wetting front advancing depth and time was fitted by power function. It proved that power function was obvious between them, the lower the initial moisture content was, the slower wetting front advancing rate would be. A 1D algebraic model was used to analyze soil moisture profiles; it was found that theoretical values were more accurate as the initial moisture contents increased. In brief, there was an intimate connection between soil infiltration capacity and initial moisture contents infiltrated by saline water. As the infiltration process was carried out, the influence of initial moisture contents on infiltration capacity gradually decreased.