Floating marine treatment barrel for oil-water separation

The invention discloses a floating marine treatment barrel for oil-water separation. The floating marine treatment barrel structurally comprises a shell, a floating plate and a garbage treatment cavity, wherein the garbage treatment cavity is provided with a fixator, a residue blocking net, a motor and an oil-water separator, the oil-water separator is provided with a telescopic rod and a sponge mat. The floating marine treatment barrel has the beneficial effects that large-area and small-area classification treatment is carried out on marine litter through the residue blocking net and a filter cavity, the large-area marine litter is blocked through the residue blocking net, then the residue blocking net is simply and conveniently mounted and dismounted through the fixator, the large-area litter in the residue blocking net is cleaned, then the small-area litter is crushed again through a crushing paddle and discharged together with seawater, meanwhile, under the adsorption effect of the sponge mat, grease and