To overcome the overcoming of agglomeration and reclamation of nanoparticulate materials, it is imperative to synthesize nanosized materials with other morphologies. Fe3O4nanotubes were synthesized by using anodized aluminum oxide as template under microwave assistance by tuning the deposition mechanism in this work. The obtained nanotubes were characterized by the means of XRD and SEM. Its magnetic property was also investigated. Results show that tubes are of the spinel structure, a layer of about 30 nm Fe3O4was deposited attaching to the AAO wall, and the nanotubes possess good magnetic performance.