Abstract: Preparation of anotubes by microwave method is a new technology that make the use of dielectric effect of microwave on water. TiO2 nanotubes were obtained using microwave method from the precursor of TiO2 nanopowders prepared by sol-gel method，and then the samples were characterized by TEM and SEM. The obtained TiO2 nanotubes without washing by HCl have very complete shapes with diameter of 8—15 nm，inner diameter of 5—10 nm and length of 50—100 nm. Upon washing with HCl，the nanotubes structure would be partially destructed as observed with electron microscope.