The invention relates to the technical field of microwave dielectric materials, and concretely relates to a C0G microwave dielectric material. The main material of the C0G microwave dielectric material is Mg(1-x-y)CaxSryTiO3 (x is more than 0 and not less than 0.6, and y is not less than 0.1 and not more than 0.6), the modifying additive of the C0G microwave dielectric material is one or more of Al2O3, MnO, CeO2, CoO and Nb2O5, and the sintering aid of the C0G microwave dielectric material is one or more of B2O3, SiO2, ZnO, Li2CO3 and Bi2O3. The C0G microwave dielectric material can be sintered at a high temperature (1260-1320 DEG C), ceramic powder has the advantages of uniform component, narrow granularity distribution, good dispersibility and good formability technology, the relative dielectric constant of the C0G microwave dielectric material varies at 10-20, the room temperature loss tangent is less than 4 * 10<-4>, the insulating resistance is more than 1 * 10<12> omega, the capacitance has the C0G temperature characteristic, and the Q.f value reaches up to 71053 GHz (the Q value measured at a frequency of 12.9 GHz is 5508).