Polyaniline (PAni) is one of the most widely studied conducting polymers due to its easy synthesis method, reversible chemical reaction, andhighenvironmental stability, low cost and flexible electrical conductivity.Blending PAni with some quantity of aniline dimer-COOH modified Fe3O4nanoparticlescanform novel composites with suitable electric and magnetic properties. Standard four-point probe apparatus wereused to measure the conductivity of pure Aniline, Polyaniline (PAni) and PAni/Fe3O4nanocomposites, while magnetic properties of the magnetite (Fe3O4) nanoparticles and PAni/Fe3O4nanocomposites were recorded on Vibrating Sample Magnetometer (VSM). It was foundthat the electrical conductivity was increasedand decreasedwith addition of Fe3O4nanoparticles (1.8 × 10-9S/cm, 6.32× 10-1S/cm, and 2.3× 10-3S/cm). It was also observed that the composites exhibit super paramagnetic performance with saturation magnetization (Ms) of Ms= 22.5 emug-1.The morphology and elemental composition analysis of the modified Fe3O4nanoparticles and PAni/Fe3O4nanocomposites was studiedusing Field Emission Scanning Electron Microscope (FESEM). However, the obtained Fe3O4nanoparticles was found to be spherical and agglomerated, due to higher magnetic attraction between the particles, while the modified Fe3O4nanoparticlesembedded in the PAni nanotubes lead to the formation of the composites with clear nanofibersstructure.The absorption analysis of the modified Fe3O4nanoparticles and PAni/Fe3O4nanocomposites studied by UV-visible found to be 370 nm and 650 nm respectively which can be attributedtoπ-π transition of benzenoid ring of PAni, suggesting that the conductive PAni was formed. Theresult was further supported by XRD andFTIR analysis.