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The (1-x)CoFe_2O_4+xBaTiO3 (x=0.5) magnetoelectric(ME) nano-powders were prepared by molten salt synthesis method and the corresponding ceramics were sintered.The morphology and structure of as-prepared powders and ceramics were characterized and studied systematically by using XRD,SEM and EDX.In particles,the two phases,CoFe_2O_4 and BaTiO_3,are symbiotic with nano-scale coordinate lattice.A considerable ME coefficient(αE) of about 15.96 mV/A is observed in the x=0.5 ME ceramic,which is attributed to the better interface sintered by using those nano-particles with the two phases and a correct poling strategy on the sample.But the interface between the phases has gone through a separating and recombinating during their sintering process.A two-time sintering process was also performed on those ceramics while the α_E of the x=0.5 two-time sintered ceramic drops to 67.7 μV/A,which could be explained by the split of the interface during the recombination in the ceramics preparation.