The invention discloses an antifouling skin based on a sarcophyton-trocheliophorum antifouling structure. The antifouling skin comprises a bottom layer, an adhesive layer, a lubricating fluid layer and a gel layer, wherein the bottom layer, the adhesive layer, the lubricating fluid layer and the gel layer are combined together in sequence from interior to exterior. Lubricating fluid of the lubricating fluid layer penetrates through the gel layer and is attached to the external surface of the gel layer; a layer of smooth surface is formed; a bacterium, an alga, a fouling biological larva and the like are enabled to difficultly attach; even though a few organisms attach in a fouling manner, as the navigational speed is unchanged, under the lasting action of water flow pressure, the continuous lubricating fluid can be also fed into the gel layer; the surface of the gel layer continuously presents a smooth state and the attaching fouling organisms are scoured off.