The invention relates to the field of chemical industry, in particular to a production technology of high-purity benzene; the high-purity benzene is prepared by carrying out a series of technological processes such as de-heavy treatment, hydro-fining, light component and impurity removal, extractive distillation, pure benzene separation and secondary separation on crude benzene produced in the processes of coking and oil refining; the production technology is simple in operation, low in requirements for equipment and high in purity of the extracted benzene. The production technology has the beneficial effects that the process is simple, and the pure benzene can be more easily prepared; the obtained benzene is high in purity; the reaction conditions are mild, and the requirements for the equipment are not very high; the production technology is low in cost and less in prior-period investment; an additional product produced in a kerosene processing process is fully utilized, so that pollution is prevented; the extracted benzene can be used for multiple industrial fields; in the production technology, most intermediate substances can be recycled.