Abstract: According to the water balance, this paper puts forward a method to determine single point source infiltration parameters based on Kostiakov model with water flow advance and regression process data in film hole irrigation. Flied infiltration parameters in film hole irrigation can be simply and effective1y determined with the new method which eliminates the effect of spatial variability on point source infiltration parameters. The research results laid a foundation for technical element design and operation evaluation of a film hole irrigation project.