The alkaline and saline soil was investigated.According to the infiltration experiment results and analysis experiment data by infiltration model,we studied the soil water and salt transport characteristic on the condition of infiltration with saline water on alkaline and saline soil.The results show that when the concentration in given area,cumulative infiltration,wetting front of soils increased with the concentration solution;the distinction of infiltration ability of alkaline and saline soil is small when the value of SAR is different,especially saline soil.The water and salt transport of alkaline soil positively related with the concentration of infiltration solution,but the saline soil was not the case.