Insertion of aniline molecules and subsequent polymerization using FeCl3, as an oxidizing agent were examined in the layers of rutile-type HNbMoO6. Although the polyaniline/host ratio was variable depending on the amount of intercalated aniline before polymerization, the interlayer spacing was constant as similar to 6.3 Angstrom regardless of the ratios. Comparison of FT-IR and FT-Raman spectra for (PANI)(y)NbMoO6 (0.26 less than or equal to y less than or equal to 0.64) clearly showed that both quinoid and benzenoid forms exist in the galleries of inorganic host. IR and Raman active modes of extracted PANI from the matrix were quite similar to those of emeraldine salt.