Abstract: Different ratio Zn-Ti substituted BaM hexaferrites were prepared by traditional ceramic method and the effects of Zn-Ti substitution amount and sintering temperature on phase composition,microstructure and electromagnetic properties were investigated with XRD,SEM and Vector network analyses.It is manifested that temperature rise helps the growth of crystal grains,and most of those grains present hexagonal plate shape.Along with the increasing of ratio of substitution,the complex dielectric constant of BaZnTiM ferrites increases,the dielectric loss undulates and the magnetic loss decreases.