Abstract: In filmed hole irrigation,the infiltration from a field surface can be modeled as a 3-D Infiltration from a point source with sufficient water supply.In this paper,based on a series of experiments,a point source infiltration model which includes the effects of the hole diameter,the soil texture,and the initial soil moisture,etc.is developed.The accuracy of the model is satisfactory.The results would greatly benefit the stufy on the filmed hole irrigation theory and the irrigation technology.