Based　on　some　simplification　and　assumption　of　one-dimensional　finite-strain　consolidation　theory　and　Barron　axisymmetric　consolidation　theory,　a　finite-strain　consolidation　governing　equation　for　vertical　drains　ground　is　established.　Based　on　the　finite-strain　consolidation　equation　for　double-layered　vertical　drains　in　soft　soil　and　the　computing　program　in　some　literatures,　the　power　function　relationships　of　permeability　coefficient-void　ratio　k=ced　and　effective　stress-void　ratio　e=a(σ＇)b　for　soft　soil　are　introduced;　and　some　examples　calculation　of　consolidation　behaviors　of　double-layered　vertical　drains　ground　are　carried　out　under　instantaneous　loading.　The　obtained　results　show　that:　(1)　Some　important　influence　on　the　consolidation　behaviors　of　double-layered　vertical　drains　ground　of　various　parameters　in　power　function　permeability　and　compressibility　relationships　for　double-layered　soft　clay　soil　are　as　follows.　With　the　increase　of　parameters　c1,　c2　of　power　function　permeability　relationship　(the　increase　of　permeability),　or　parameters　a1,　a2　of　power　function　compressibility　relationship　for　soft　soil,　the　void　ratios　in　the　radial　and　vertical　directions　decrease　faster;　and　the　dissipation　velocity　of　excess　pore　water　pressure　and　the　settlement　rate　are　also　accelerated;　the　settlement　development　rate　is　faster　than　the　dissipation　velocity　of　excess　pore　water　pressure.　(2)　The　void　ratio　and　average　excess　pore　water　pressure　at　the　interface　of　double-layered　soft　soil　present　significant　mutation,　of　which　the　distribution　curve　along　the　depth　is　divided　into　two　sections　with　different　consolidation　behaviors.