The spin ferrites with composition of Y3-xCaxAl0.33Fe4.6-xZrxMn0.02O12 (mole fraction x=0,0.2,0.25,0.3,0.35) were prepared by the solidstate method. The influences of Ca2+, Zr4+ co-substitution on properties of yttrium aluminum garnet (YAlIG) ferrites were investigated. The results showed that the content of Ca2+, Zr4+ cosubstitution had seldom influence on the dielectric constant of YAlIG ferrites. With the increase of substitution content x, the saturation magnetization of YAlIG first increased, and them another phase proposed in the material with too much substitution content but 4πMs of the material was reduced.The appropriate amount of Ca2+, Zr4+ cosubstitution could obviously reduce the ferromagnetic resonance linewidth of YAlIG material. The ferromagnetic resonance linewidth (ΔH) of YAlIG first reduced and then increased with the increase of the substitution content x.The lowest ΔH was obtained at x=0.3 before the appearance of other phase.