In　this　paper,　relevant　experiments　had　been　conducted　on　the　stabilized　mixture　of　hydraulic　fill　sand　and　silt　in　coastal　areas,　include　the　study　of　optimum　mixing　ratio　of　hydraulic　fill　sand　and　silt　and　the　appropriate　curing　agent;　as　well　as　the　change　law　for　the　strength　of　solidified　sediment　mixture　with　different　curing　agent　content.　The　results　show　that　strength　of　the　stabilized　mixture　showed　the　highest　when　mass　ratio　of　hydraulic　fill　sand　and　silt　was　60%　:40%,　and　using　G2　as　the　curing　agent.　Strength　of　stabilized　sediment　mixture　all　increased　in　different　degrees　as　the　mixing　amount　of　curing　agent　increased.