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Electric discharge machining (EDM) is gaining popularity to drill micro holes in materials which have greater strength-heat-resisting properties, as conventional micro drilling results into high tool wear and frequent tool rupture. There are numerous process parameters which should be investigated and optimized to obtain best performance in EDM micro drilling. In present-day work, a trial investigation has been performed to present the effect of variable parameters such as electrode rotation rate, electrode material, pulse-off time (Toff), pulse-on time (Ton), and thickness of working material and drilling angle on measured performance variables, namely drilling rate and electrode wear ratio, during the micro drilling of Ti-6Al-7Nb. Based on this experimentation, important variable parameters and their range have been selected for further experimentation using design of experiment (DOE) approach. Using DOE and modified non-dominated sorting genetic algorithm (NSGA-II) approach, optimal combinations of procedure parameters have been obtained for maximum drilling rate and lower electrode wear ratio.