Electrodischarge machining method, proposed by B. Lazarenko is considered as the first catalytic link of the whole generation of methods and technologies used in machine-building production. High standard of theoretical and practical knowledge in the field of EDM is fixed and perspective ways of its further development are considered. Whole group of methods based on the processes of electrical discharge in liquid and gas medium is discussed. Obtained results of their industrial application and the ways of the further improving are disputed.