The paper describes features of the visualization EHD-flows methods. It is demonstrated that the most precise method is the method of visualization by means of gas bubbles. The paper contains methodology of processing photo and video materials of EHD-flows by means of special programs, developed by authors. The programs are based on well known mathematical systems MathCad and MatLab. The results of EHD flows processing are shown as vector fields, picture of isolines of velocity and surface diagram. Relative error of method is evaluated here. It does not exceed 10%. The paper contains analysis of received data and zone structure of EHD flows. The value order of attached mass of separate ion within the limits of central part of EHD-flows is identified.