The purpose of this research was to investigate soil hydraulic conductivity, soil pores water flux, and water-conducting porosity under conditions of different vegetation types. Related experiments were executed on three vegetation types, Taiwania plantation, Areca palm plantation, and banana plantation, and both soil surface and depth of 20 cm, which were located beside on the Medicinal Botanical Garden of Lienhuachih Research Center, Nantou. Tension infiltrometer was used to measure soil hydraulic conductivity under different water pressure head in situ. Meanwhile, pore water flux ratio and water-conducting porosity were calculated on the basis of specified water pressure head range. Besides, undisturbed soil samples were extracted for physical properties analysis including porosity and et al., that the data also was used to probe the relationship to soil hydraulic properties. From the soil porosity analysis, Taiwania plantation had higest total porosity, and macroporosity (pressure head >−3 cm H2O), mesoporosity (pressure head range −3 to −100 cm H2O), and miniporosity (pressure head range −100 to −500 cm H2O) measured by Ceramic Plate Extractor in three vegetation types. Those mean were significant difference between vegetation types by ANOVA. Secondly, from the tension infiltration test, the estimated saturated hydraulic conductivity of soil surface was higher than soil depth of 20 cm in each three vegetation types. The estimated unsaturated hydraulic conductivity of soil surface was higher than soil depth of 20 cm under the conditions of pressure head > –10 cm H2O, but lower under the conditions of pressure head < –10 cm H2O. The pore water flux and water-conducting porosity are ways to express the water flux ratio under specificed water pressure head range and the porosity that really participate conducting water. The water flux ratio of macropores (pressure head > –3 cm H2O) of soil surface in Taiwania plantation, Areca palm plantation, and banana plantation were 70.30%, 82.45%, and 80.70% respectively, and soil depth of 20 cm were 63.84%, 72.16%, and 68.58% respectively. Besides, there were two approach, Watson and Luxmoore (1986) (WL approach) and Bodhinayake et al. (2004) (BSX approach), were used to calculate water-conducting porosity. Water-conducting macroporosity (pressure head range 0.6 to –3 cm H2O) of soil surface calculated by the WL approach in Taiwania plantation, Areca palm plantation, and banana plantation were 0.056%, 0.023%, and 0.027% respectively; and soil depth of 20 cm were 0.031%, 0.006%, and 0.007% respectively; and soil surface calculated by the BSX approach in Taiwania plantation, Areca palm plantation, and banana plantation were 0.019%, 0.006%, and 0.007% respectively; and soil depth of 20 cm were 0.010%, 0.002%, 0.002% respectively. Both soil macropore water flux ratio and water-conducting macroporosity of soil surface were higher than soil depth of 20 cm. Besides, the results of water-conducting macroporosity calculated by BSX approach were far less than those measured by Ceramic Plate Extractor. This revealed that the actual water-conducting macroporosity was only about 1% of total macroporosity, and the remaining unconnected macropores which was helpless for water conduction.