The dispersion characteristics of droplets in swirling turbulent flow field is a difficult problem in the process of fluid mechanical design and optimization. A new concentric rotating cylinder is used to obtain uniformly distributed flow field. On the basis of Hinze's model, the influence of oil droplet viscosity on oil droplet dispersion characteristics is considered. The relationship between turbulent flow field and oil droplet dispersion characteristics is preliminarily discussed. The empirical relationship between flow field characteristics and oil droplet dispersion characteristics is obtained when Reynolds number is 5.5×104~2.4×105 and relative centrifugal force is 21.9~643.3.The research on dispersion characteristics of oil and water in swirling turbulent field is improved, which provides a new research idea for the liquid⁃liquid dispersion characteristics in swirling turbulent flow field.