The microwave dielectric ceramics ZnNb2O6 dropped TiO2 can be prepared by traditional solid phase synthesis. the sinterability, the phase composition and the dielectric properties of the ceramics with different levels TiO2 are investigated in this paper with the XRD and SEM analytical instruments and LCR testing analyzer. The results show that: the crystalline structure becomes complicated with TiO2 concentration increases. For the concentration of TiO2 (x<0.4), there is only ZnNb2O6 crystalline phase; with the amount of TiO2 (0.6