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Ni(Co/Zn/Cu)Fe2O4/SiC@SiO2,a microwave absorber,was prepared by the sol-gel method.The phase structure and the morphology of the microwave absorbers were characterized by X-Ray Diffraction (XRD) and scanning electron microscopy (SEM),respectively.Laser sizer (LS) and X-ray photoelectron spectroscopy (XPS) analysis show the core-shell structure of SiC@SiO2.Coaxial method was used to measure the microwave absorption properties of the prepared composites in the frequency range of 2-18 GHz.When 70 wt％ SiC is wrapped by 30 wt％ SiO2,and 50 wt％ NiFe2O4 is added into 50 wt％ SiC@SiO2,the as-prepared powders are found to have advanced microwave absorption properties with a minimum reflection loss (RL) of -32.26 dB at about 6.08 GHz,and the available bandwidth is approximately 2.1 GHz when the RL is below-10 dB.