By　means　of　the　resonant　column　test,　the　shear　modulus　G　and　damping　ratio　λ　under　the　influence　of　dynamic　load　for　silty　clay　in　Fuzhou　downtown　area　were　first　attained.　Then　the　effects　of　strain　value　γ　and　consolidation　stress　on　the　testing　result　were　explored　in　details.　Combined　with　theoretical　analyses,　the　fitting　curve　and　parameter　with　the　change　of　γ　for　G/Gmax　and　λ　of　silty　clay　in　Fuzhou　downtown　area　were　presented.　And　by　comparing　the　recommended　value　and　the　code　value,　results　showed　that:　(1)　In　Relation　G/Gmax-γ,　G/Gmax　given　by　code　value　was　the　lowest　while　it　was　the　highest　by　test　value.　The　values　given　by　test　value,　code　value　and　recommended　value　were　relatively　approximate　during　large　and　small　strains,　whereas　the　three　values　were　quite　different　during　moderate　strain.　For　instance,　when　shear　strain　γ　is　10-4,　the　difference　between　test　value　and　recommended　value　is　about　5%,　while　the　difference　between　test　value　and　code　value　is　about　20%;　(2)　In　Relation　λ-γ,　the　test　value　was　the　highest　whereas　code　value　and　recommended　value　were　approximate.　When　shear　strain　γ　is　10-4,　the　difference　of　damping　ratio　among　the　three　values　was　about　50%,　which　means　the　damping　discreteness　of　clay　soil　is　relatively　large.　The　test　findings　could　be　used　as　certain　reference　for　practical　projects　in　the　local　area　and　in　the　Southeast　coastal　area　with　similar　geological　environment.