The nutritive composition in sargassum from Haitian had been determined. The extraction of seaweed polysaccharides by hot water was studied. And the application prospect of seaweed polysaccharides was put forward.

• 摘要测定了海南马尾藻的营养成分，对热水提取马尾藻多精进行了研究，并展望了海藻多糖的应用前景。