Several　sets　of　1-D　consolidation　and　permeability　tests　considering　stress　history　and　rheological　characteristic　of　soft　soils　were　conducted　by　using　GDS　Advanced　Consolidation　Test　System.　A　lot　of　curves　have　been　presented,　such　as　curves　of　settlement,　pore　water　pressure,　void　ratio　and　coefficient　of　permeability,　and　some　parameters　of　soft　soils　were　derived　by　using　curve　fitting　method.　It　is　proved　that　rheological　characteristic　of　Xiao-shan　soft　soils　is　remarkable.　The　time　for　pore　water　pressure　dissipating　completely　is　about　5　hours　for　normal　consolidated　soils,　and　the　pore　water　pressure　dissipating　speed　of　overconsolidated　soils　is　faster　than　normal　consolidated　soils.　Stress　history　and　OCR　have　obvious　effects　on　the　coefficient　of　secondary　consolidation.