On the basis of the filter oil degassing equipment at home and abroad, a kind of highly efficient spray atomization structure was designed. Some appropriate nozzles were chosen and the distances between them were distributed reasonably through the analysis of the atomization interference between adjacent nozzles. By using FLUENT software, the situation of the jet nozzle was simulated. At the same time, through calculation and analysis, when pressure was 15 MPa, injection effect was best. Using this kind of structure, the time of oil in the aloft of the degassing tower is shortened greatly and the injection efficiency is improved. So it has been widely used in engineering applications.