The　growth　of　Pseudosciaena　crocea　and　changes　of　plankton　was　studied　under　intensive　ecological　aquaculture　model　that　didn’t　change　water.　The　result　indicated　that:　the　growth　rate　of　Pseudosciaena　crocea　was　significantly　higher　than　that　in　cage　culture　(p＜0.05),　the　essential　amino　acids,　flavor　amino　acid　and　total　amino　acids　of　Pseudosciaena　crocea　were　significantly　higher　than　that　in　cage　culture(p＜0.05),　the　PUFA　and　DHA、EPA　of　Pseudosciaena　crocea　were　also　significantly　higher　than　that　in　cage　culture(p＜0.05).　Plankton　biomass　of　aquaculture　water　increased　with　cultivation　time.　The　diversity　of　phytoplankton　was　better　in　the　early　stage,　the　diversity　index　and　evenness　index　decreased　in　the　later　stage,　the　diversity　of　phytoplankton　was　poor　in　the　end　of　the　experiment.　The　diversity　of　zooplankton　was　better,　there　was　little　change　in　the　diversity　index　and　evenness　index　of　zooplankton,　the　zooplankton　was　in　an　equilibrium　state.　©　Chengxu　and　Chonggui.