[Objective] The infiltration process and characteristics of the slump body in the alpine grassland blanket layer in the source region of the Yellow River were analyzed to provide data and theoretical basis for the slump body deformation and damage prevention and soil and water conservation. [Methods] This study used the alpine grass felt layer slump body in the source area of the Yellow River as the research object. The relationship curve between infiltration rate and time and the permeability coefficient of the slope grass felt layer slump body in the Eling Lake area of the Yellow River source were obtained through the double loop permeability test, and the suitable permeability model was determined. [Results] The infiltration rate of the grass felt layer slump body in the study area generally decreased sharply and then gradually flattened with the increase of infiltration time. The average permeability coefficients of the three test points were (5.81±2.18)×10^-3, (4.53±0.82)×10^-3, and (4.42±0.51)×10^-3 cm/s, respectively, and there was no significant difference between each other. Compared to the Kostiakov model and the general empirical model, the Horton model had a higher applicability in simulating the water infiltration process of the grass felt layer slump body in the study area. [Conclusion] The Horton model is more suitable for simulating the water infiltration process of the grass felt layer slump body.