The structure of 1, 1'-and 1, 2'-dinaphthyl methanone synthesized by the reaction of naphthalene with oxalyl chloride in the presence of AlCl3 were studied by using UV and FTIR in this paper. The analysis results showed that the difference of structures (symmetry) of 1,1'-and 1, 2'-dinaphthyl methanone were represented on the obvious difference of the spectra of UV and FTIR.