The invention relates to a new process for producing 2, 6-dichloro diphenylamine, which includes a chloroacetylization step, an etherification step, rearrangement and post-processing steps; wherein, the reaction formula of the final product, 2, 6-dichloro diphenylamine, is shown as the right: The process of the invention causes no effluent, and the biproducts such as the sodium glycollate, the sodium chloride, etc during the reaction are recycled and transferred into reused resources. Moreover, the production technology is clean and environmentally friendly with no wastes and reduced total cost, and no catalyst and sodium carbonate are needed.