Antimony-doped　tin　oxide　(ATO)　with　three-dimensional　ordered　mesoporous　structure　is　synthesized　by　the　solvothermal　method　with　KIT-6,　SbCl3　and　SnCl4　center　dot　5H(2)O　as　the　template　agent,　the　antimony　source　and　the　tin　source　respectively.　The　physical　properties　of　sample　were　characterized　by　means　of　X-ray　diffraction　(XRD),　transmission　electron　microscopy　(TEM),　high　resolution　transmission　electron　microscopy　(HRTEM),　N-2　Adsorption-Desorption,　and　Fourier　transform-infrared　spectroscopy　(FT-IR).　The　research　shows　that　the　concentration　of　ethanol　solution　and　amount　of　template　agent　of　tin　are　two　key　factors　for　preparation　of　ordered　mesoporous　ATO;　the　synthetic　three-dimensional　ordered　mesoporous　ATO　has　a　square　rutile　structure　such　that　Sb　can　be　doped　into　SnO2　crystal　lattice　effectively.　When　the　molar　ratio　of　Sn/Sb　is　5.2/1,　KIT-6　is　1　g,　and　the　concentration　of　SnCl4　is　0.30　mol/L,　the　conductivity　of　the　sample　S-1-0.30　obtained　is　the　best　and　the　volume　resistivity　can　reach　0.6　Omega.cm.　Such　a　conductive　three-dimensional　mesoporous　structure　material　is　useful　for　the　applications　in　physical　and　chemical　fields.