Abstract: The absorbing microwave characteristics of Yunnan ilmenite is measured,and the spectrum chart indicates Yunnan ilmenite has good absorbing microwave characteristic.According to above result,a new technique of reducing Yunnan ilmenite by microwave radiation is put forward.Through measure the absorbing microwave characteristic of mixed ilmenite and coke,the optimal coke ratio in the mixture is ascertained.The effect of process conditions on TiO₂ grade after reduced is researched,which include the ratio of coke and complex additive in the mixture,reduction temperature and reduction time etc.The optimal process parameters of reducing Yunnan ilmenite by microwave radiation are:reduction temperature 1 150℃,reduction time 1.5 h, the ratio of complex additive and mixed carbon respectively 3% and 15%.In this condition,the TiO₂ grade in reduced ilmenite is 50.34%.