Nowdays, the increasing of energy demands and development of petrochemical industries encourage necessity of an abundant natural sources of energy and raw material for industries. Syngas from coal has a widely uses both in energy and chemical feedstock. As the biggest reserves in the world, coal is still being in the second place. Coal development technology become indispensable. There are some coal technologies which have been developing since latest years, either one is gasification technology. Gasification is a very slow reaction and lacked for high temperature, known that in excess of 1000oC minimum temperature is needed for excellent gasification process. Using microwave to boost gasification acceleration become considerable concern, it will influence dramatically the reactivity of oxygen even supply endotermic heat of reaction from free radical energy. The effect of microwave discharge on coal gasification has been studied for aiming of reducing operation temperature and achieved high conversion of coal. There are some characteristics of microwave energy would speed up free radical formation which has extreme reactivity. It is also would reduce energy consumption in comparison with conventional coal gasification process. Power of microwave and electromagnetic field intensity were being prominent variables in this research. This research was done in a longitudinal vibrated bed reactor system.