The main objective of this paper is focused, to study the previous investigations of various researchers. Some recently invented advance materials like, Titanium, Titanium carbide etc. are not easily machined by conventional machining processes. So that, powder mixed electric discharge machining will be preferred for these materials. Because it gives better output responses like better material removal rate, lower tool wear rate and extensively smooth machined surface. These output responses are highly used in industrial applications. This review paper will be helpful for the young researches to understand the mechanism of powder mixed electric discharge machining and brief the previous research investigation in this field.