Abstract: Due to the complex composition of crude oil, oil sludge inevitably deposits at the bottom of the tank in the storage process of crude oil, and consequently the operation safety and economy of storage tanks are impacted. The effective technology to solve the stratification and deposition in the crude oil tanks is to install a rotary jet mixer. In this paper, various domestic and foreign rotary jet mixers were, for the first time, illustrated and compared from the aspects of structural component, working principle, application research situation, advantages and disadvantages according to the driving types and speed control principles. It was pointed out that the domestic research on the localization of rotary jet mixers in China was limited by simple research direction and insufficient understanding on the key issues. Then, a design plan for structure innovation was proposed referring to the foreign advanced design concept of rotary jet mixer, so as to promote the development of rotary jet mixing technologies in the field of oil storage and transportation engineering.