Porous　and　conductive　diatomite　composite　materials　were　prepared　via　the　calcination　of　the　Sb-SnO2-coated　diatomite　precursor　derived　from　the　co-precipitation　route　with　diatomite　as　the　substrate.　Conductivity　of　the　samples　was　influenced　by　the　Sb-SnO2　coating　ratio.　Calcination　temperature　had　an　impact　on　the　crystal　lattice　parameters　and　grain　sizes,　hence　altering　the　conductivity　and　resistivity　of　the　composite　materials.　The　samples　were　characterized　by　means　of　X-ray　diffraction　(XRD),　scanning　electron　microscope　(SEM),　transmission　electron　microscope　(TEM),　energy-dispersive　X-ray　spectrometry　(EDS),　N-2　adsorption-desorption　measurement　(BET),　and　Fourier　transform　infrared　spectrometry　(FT-IR).　The　conductive　performance　of　the　samples　was　determined　using　a　Four-Point　Probe　Meter　apparatus.　It　is　shown　that　the　mesoporous　(pore　diameter　=　6　nm)　sample　with　n(Sn)/n(Sb)=8/1　and　a　Sb-SnO2　coating　ratio　of　25.8wt%　derived　from　calcination　at　700　degrees　C　exhibited　the　lowest　resistivity　of　22　Omega.cm.