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As the starting point to the research of water-salt transport rules under the condition of film hole furrow irrigation, water-salt distribution under brackish water film hole furrow irrigation was studied systematically by experimental observation and numerical simulation. Infiltration of film hole furrow irrigation under the condition of laboratory test was simulated with HYDRUS—3D model. Using HYDRUS—3D model to simulate the infiltration of film hole furrow irrigation was a method with relatively higher reliability. Simulation scenarios with three holed ratios and four irrigation water amount levels were designed on this basis. The water-salt transport rules of different simulation scenarios were explored, so as to provide reference for the design of film hole furrow irrigation. Simulation results showed that when irrigation amount changed from 450m3/hm2 to 900m3/hm2, the soil salt in 0～40cm soil depth could be restrained in a short time, and the salt rejection rate of 3%, 6% and 9% holed ratios were all above 46%, which could provide good environment for the growth of peanuts. Under the condition of film hole furrow irrigation, irrigation amount should not be less than 300m3/hm2 for achieving the effects of economizing water and reducing salt content. The research results could both provide theoretical and technical basis for popularization and application of brackish water film hole furrow irrigation technology and provide reasonable soil secondary salinization prevention measures as well as scientific basis for water management in the field.