The utility model discloses an atomizer for ocean oil drilling, include: spray head shell, its one end opening, and inside be the cavity is provided with a regulatory region on another terminal surface, its and spray head shell is coaxial, the feed liquor chamber, feed liquor chamber upper portion is provided with the draw -in groove, just the spray head shell cover is established the one end in feed liquor chamber is outside, and spray the body, its lower part with draw -in groove sliding connection, and the top face on upper portion can support the inner wall that leans on at the regulatory region, prevention regulatory region play water. Adopt an atomizer for ocean oil drilling, can prevent water waste at the water yield of pressure adjustment shower nozzle in too big of intaking. Can produce thin water smoke, particle size of the fogdrop is less, and density is great, and the fog field distribution is even, atomizing process is simple quick, and atomization effect is good. The material possesses better anti -corrosion performance, is applicable to the sea water medium, the difficult jam, and convenient the maintenance is maintained. Little, the required water source of water consumption pressure is not high, can be applied to other fields.