Abstract: In order to investigate the effects of soil bulk density, initial soil moisture content, pressure head, and clay particles content and infiltration time on the characteristics of point source infiltration under film hole irrigation. The experiment was carried out by orthogonal design method including 9 tests and 3 verification tests. Based on laboratory test under film hole irrigation, the paper analyzed the effects of multifactor interaction on accumulative infiltration per unit film hole area, infiltration rate and average incremental of volumetric moisture content under point source infiltration under film hole irrigation. Moreover, the one empirical model of the relationship between the accumulative infiltration per unit film hole area and the influence factors and another empirical model of the relationship between the average soil volumetric moisture content increment in wetted body and the influence factors had been built respectively. Furthermore, the root mean square errors of these empirical models were 0.032 cm and 0.006 cm³/cm³, respectively, the correlation coefficients were greater than 0.97, the determination coefficients were over 0.95(P<0.01), and the relative error between the simulated values and the measured values of these empirical models were within ±13%. The results of this study indicated that pressure head had no significant effect on accumulative infiltration per unit film hole area (P>0.05). However, the initial soil moisture content had a significant effect on accumulative infiltration per unit film hole area (P>0.05), and the soil bulk density, clay particles content and infiltration time had extremely significantly effect on accumulative infiltration per unit film hole area (P<0.01). Infiltration time was the main factor affecting the accumulative infiltration per unit film hole area, followed by clay particles content, soil bulk density and initial soil moisture content. The average soil volumetric moisture content increment in wetted body was not affected by the infiltration time. Soil bulk density, initial soil moisture content, pressure head, and clay particles content have extremely significantly effects on average soil volumetric moisture content increment in wetted body (P<0.01). Initial soil moisture content was the main factor affecting the average soil volumetric moisture content increment in wetted body, followed by soil bulk density, pressure head and clay particles content. The study can provide a theoretical basis for further optimizing the combination of technical factors for film hole irrigation.