The invention discloses an experimental apparatus of dynamic simulation and research for processing the electrical desalting of polymer-contained crude oil aiming at polymer driving oil extraction. The apparatus comprises: a preheating tank of crude oil (1), a crude oil pump (3), a heater (5), a polymer dispersant tank (7), an AC/DC electrical desalting tank (12), a high-frequency electrical desalting tank (13), and an oil gathering tank (19). The polymer dispersant is injected to the polymer-contained crude oil which has been preheated by the preheating tank of crude oil (1) by an injecting pump of polymer dispersant (9); transporting the oil into a plasma electrochemical oxidation tank (4); then, transporting the oil into the AC/DC electrical desalting tank (12) and the high-frequency electrical desalting tank (13) respectively. The verifications of the functions and the effects of the polymer contained in crude oil due to different types of polymer dispersants, plasma oxidation operating parameters as well as the traditional AC/DC electrical desalting technology and the high-frequency electrical desalting technology are realized; the technological problems of the stability of the crude oil emulsions caused by the polymer injecting oil extraction, and the difficulty of demulsification are solved. The comprehensive, accurate and feasible techniques and operating parameters are provided for the practical production; the strong experimental assurance is provided for the application of electrical desalting devices in refineries and oil fields.