Pyrotechnics are energetic materials composed of fuel and oxidizer in which a lower burning rate than other energetic materials, including propellants and explosives. In this study, the electrical breakdown and ignition properties of five component magnesium-based pyrotechnic mixtures were evaluated. This pyrotechnic mixture (real sample) includes magnesium as the fuel, barium peroxide and barium nitrate as oxidizers, phenol formaldehyde resin (PF) as the binder and graphite as the additive. In this research, a method for measuring the breakdown voltage and electrical resistance of powders by HRLC apparatus is presented. Electrical breakdown in the sample occurs as a result of applying and increasing the voltage up to a threshold voltage called the breakdown voltage.At breakdown voltage, the electrical resistance of the sample drops significantly and the insulator sample becomes conductive. Also, the amount of sample and applied torque were optimized to measure the breakdown voltage of five component magnesium-based pyrotechnic mixtures. According to the results, 0.4 g value for sample weight and 8 N.m torque were selected to compress the sample to measure the breakdown voltage of pyrotechnic mixtures. The ignition properties studied in this thesis include friction sensitivity, electrostatic discharge sensitivity, luminous intensity, burning rate and thermal analysis of DSC. The variations of breakdown voltage and ignition properties were evaluated by reducing the weight ratio of each component relative to the real sample and keeping the values of the other components constant. The results show that magnesium as a conductive metal has more effect on the breakdown voltage than other components, so that the breakdown voltage of the pyrotechnic mixture without magnesium is 332V that compared to the real sample (23V) it has increased significantly. The results of friction sensitivity measurement showed that presence of graphite with low content in the mixture (0.27 wt%) as well as the presence of magnesium as fuel resulted in reduced friction sensitivity of real sample. Also, the friction force required for ignition of the real sample without the presence of barium peroxide and barium nitrate is greater than 490 N, indicating that the real sample without oxidizer is not sensitive to friction. The results of the electrostatic discharge sensitivity indicated that none of the pyrotechnic samples produced in this study, were sensitive to electrostatic. The results of luminous intensity and burning rate evaluation showed that decreasing the weight ratio of the fuels and oxidizers in the mixture decreased the luminous intensity and the burning rate but the changes in graphite values had no effect on these ignition properties. The effect of magnesium as the fuel on luminous intensity and burning rate is more pronounced than oxidants. Results of DSC thermal analysis also showed that in addition to magnesium, phenol formaldehyde resin reacts with oxidants. Also in these reactions the released heat varies with the weight ratio of the components but the ignition temperature is constant. Also, due to applying of 8 N.m torque to the real sample, the friction sensitivity, luminous intensity and burning rate decreased, but after applying the breakdown voltage, these parameters showed an increasing trend.