The invention relates to an oxygen supply used for oxygen enrichment agglomeration, and the oxygen supply consists of an air inlet main pipeline, air inlet branch pipelines, a gas nozzle and a control valve, wherein, the air inlet main pipeline is connected with the air inlet branch pipelines, an oxygen air inlet and the main pipeline air inlet control valve are arranged on the air inlet main pipeline, and the branch pipeline air inlet control valve and the gas nozzle are arranged on the air inlet branch pipeline. The air inlet is connected with an oxygen transfer pipeline, the air inlet branch pipelines are connected with a gas nozzle through a thread, and the air inlet branch pipelines has distances of 0.5-4.0 m; the gas nozzle is divided into an A section and a B section, the A section and the B section adopt V type, wherein, a V type angle adjacent to the A section of the one end of the air inlet is 0-90 degrees, a V type angle adjacent to the B section of the one end of the air inlet is 0-150 degrees, a threaded connection is adopted between the A section and the B section; an inclined angle of a gas nozzle center line and a vertical direction is 0-90 degrees, and the gas nozzle quantity is 10-200. The design of the invention is reasonable, the manufacture is easy, the usage effect is good, and the invention is suitable for the steel production industry.