Abstract: In order to investigate the quantitative characteristics of priority infiltration under different land use types, this paper takes garden land, cultivated land and forest land of terraced fields in the southwest karst region as research objects, and carries out staining infiltration tests by means of a table-mounted ring infiltrator and bright blue to quantitatively classify the priority flow and matrix flow of different land use types on terraced fields, and conducts a comparative study on their infiltration rates and cumulative infiltration amounts. The results show that:（1） matrix flow is the main part of soil infiltration in the terraces in this area.（2） During the whole infiltration process, the infiltration rates of priority flow in both garden land and cultivated land are greater than those in forest land, and when stable infiltration is reached, the infiltration rates of priority flow in cultivated land and garden land are 1.87 and 1.80 times higher than those in forest land, respectively, and the cumulative infiltration number is 1.2 or 1.3 times higher than those in forest land.（3） In terms of staining infiltration depth, the preferential flow movement depth of arable land can reach 32.1 cm, which is significantly greater than that of garden land（25.5 cm） and forest land（15.7 cm）, that is, compared with forest land, garden land and arable land have better pore development and the preferential flow phenomenon is more obvious.（4） The soil texture of different land uses significantly affects the priority inflow rate and the magnitude of infiltration.