Multiferroic Bi1-xDyxFeO3 with different amounts of doping Dy was prepared in the Sol-gel method. The phase，microstructure and morphology of the samples were characterized with XRD and SEM, respectively. The electromagnetic parameters and microwave absorbing properties were measured respectively in transmission/reflection technique and arc method under the network analyzer system. The optimal calcined temperature was confirmed on the basis of the analysis on the effects of calcined temperatures on microstructure and morphology. Further studies were carried out with regard to the influences of Dy-doped contents on microstructure, complex permitivity and permeability，electromagnetic loss mechanism and wave absorbing properties. The results indicate that the particles are short fibers in submicron and impurity phases disappear under the calcined temperature of 850 ℃. The doped Dy can effectively restrain the formation of the impurity phase, volatilization of Bi3+,and spiral spin magnetic structure. Therefore, the complex permitivity and relax strength of the permeability spectra are improved. Due to the coexistence and competition of dielectric and magnetic loss mechanism,Bi1-xDyxFeO3 with doping Dy can improve absorbing ability in high frequency ranges.