The invention discloses a microwave medium ceramic and the manufacturing method. The mol proportion of constituent of the raw material is ZnO 20-35%, MgO 5-20%, TiO<SUB>2</SUB> 50-55%, and B<SUB>2</SUB>O<SUB>3</SUB> 1-3% of weight proportion. It is made from first ball milling, pre-firing, second ball milling,, making column that has certain D/h, sintering under 1000-1100 degree centigrade, taking heat treatment. The benefit of the invention is that it supplies a microwave medium ceramic that could be sintered in middle temperature and has high Q factor, dielectric constant and stable temperature coefficient. It is the critical material for making resonator, filter, oscillator and phase shifter. |