Soil water infiltration measurement is helpful to investigate the adjustive effects of epikarst on rainfall resource in karst area.Tension disc permeanmeter(d=20 cm

h0=-20 mm) was used to determine soil water infiltration in the typical soil profiles in karst depression of northwest Guangxi.The results showed that the differences of soil infiltration capability were obvious in the soil profile

and it had a tendency to decrease with the increase in soil depth.However

infiltration rate of 50-80 cm soil layer was lager than that of 20-50 cm soil layer in vegetable land.The approximate hydraulic conductivity in 0-10 cm soil layer was 5.2 times higher than that in 20-50 cm soil layer in vegetable land

and it was 3.1 times higher in 0-16 cm soil layer than that in 55-70 cm soil layer in corn land.Soil specific gravity and initial water content had a close relationship with soil infiltration

and their correlation coefficients with hydraulic conductivity were-0.676* and-0.841*respectively.