This article based on the planning theory system of seaport . i did qualitative analysis to yuanyang port through study of geography and natural condition . all of these are based on the systemic sum up of the original seaport condition and its existing problem 本文是根据港口规划体系理论，在对大长山岛原有港口状况及所存在的问题进行系统分析、总结的基础上，通过对鸳鸯港的地理条件和自然条件的调研，通过对其周边经济环境的考查，运用定性分析，论证了鸳鸯港建设的必要性和重要性。
