In order to explore the water movement law of karst shallow fractured soil, the infiltration characteristics of fractured soil and the adaptability of infiltration model were explored through field investigation and single ring infiltration test. The results showed that:(1) The initial infiltration rate of fissured soil was 21.06~57.90 mm/min, and the stable infiltration rate reached 4.21~13.69 mm/min after 20~60 min infiltration time, and there was a significant decrease from the initial to the final stable infiltration stages (40.89%~89.08%). Compared with non karst areas, the infiltration rate of karst fissured soil was faster, and the infiltration characteristics of fissured soil were in medium degree variation (coefficient of variation was 0.52~0.67). (2) Little significant correlations were observed between the infiltration characteristics and soil properties (P<0.05). The infiltration capacity of fissured soil had no significant correlation with soil bulk density, capillary porosity and root system. Affected by factors such as fissure rock soil interface, it was significantly different from that in non karst areas. The infiltration capacity of different land use types in karst fissure was grassland>farmland> arbor>shrub. (3) The results showed that Horton model was better than Philip model and Kastiakov model, and could better simulate and predict the infiltration capacity and infiltration process of karst shallow fissured soil. These results could provide new research ideas and scientific theoretical basis for the study of slope water movement and underground leakage in karst area.