The invention discloses a realization method for the office automation document flow dynamic process; a system administrator of a user unit sets the functions of document drafting or document signing, document verification including modification or document verification, document commenting including modification or document commenting, issuing, digital signature, signature verification, official stamp affixing, sending, printing, archiving, document publication and issue, and the like, in advance, then the four levels of permissions of C-typed, B-typed, A-typed and Z-typed are set according to different functions used by the user, the classified permission management is adopted and the dynamic process is realized to complete the document flow. As the realization method adopts the realization method of the dynamic process of the document flow, the document flow procedure is flexible and rapid, the operation is simple and convenient, the office efficiency is improved, the reconstruction and the development of the document flow process are saved, the total costs for the reconstruction and the development are reduced, and the product degree of an office automation system is improved.