The advancement of modern manufacturing technology is closely linked to the advancement of society. A common machining technique called cutting can produce a variety of essential parts that are used in many important fields. Many alternative approaches have been tried to improve the cutting performance, and the technique with the most promise has been found to be surface micro-texture technology. The manufacturing and production sectors heavily rely on electrochemical machining. ECM is typically favoured over metal matrix composites, hard materials, and super alloys, even when dealing with materials that are challenging to manufacture. Because of its exceptional resistance to corrosion and different acids, including hydrochloric acid and sulphuric acid, it finds extensive use in industrial heat exchangers, oil production and refinement, aerospace, and maritime applications. This review paper examines the effects of a number of influencing factors on material removal rate (MRR), tool wear rate (TWR), and surface roughness (SR) in electrochemical machining of superalloys and composites, including applied voltage, current density, electrolyte concentration, electrolyte pressure, and electrolyte type. The study also implies that different ECM machining process parameters affect different machining performances, including surface finish (Ra), tool wear rate (TWR), and material removal rate (MRR) for super alloys and composites. The most recent advancements in superalloy machining and the many research difficulties they present are also the focus of this paper.