SnO2 films were prepared by atmosphere pressure chemical vapor deposition (APCVD) method. The preparation, structure and photoluminescence (PL) properties of the SnO2 films were investigated. All the obtained films were polycrystalline with the rutile structure. A violet (396 nm) and a blue (446 nm) photoluminescence peaks were observed at room temperatures. The intensity of the PL peaks located at 3.13 eV decreased with increasing the annealing temperature. The emission mechanism of the SnO2 films has been investigated.