A perovskite-type oxide (La 0 . 7 Sr 0 . 3 MnO 3 + λ ) coating was deposited on a FeCrAlRE wire-mesh support by an air plasma spraying technique. The coated samples, as well as the powder samples prepared by a normal coprecipitating technique, were investigated for three-way catalytic performance and characterized by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), Brunauer-Emmett-Teller (BET) and ultrasonic wave vibration tests. La 0 . 7 Sr 0 . 3 MnO 3 + λ coatings exhibited 95%, 48% oxidation rates of CO and C 3 H 8 , respectively, at 550 o C, while the activity for NO reduction decreased. Furthermore, the coating could be used as the support of noble metals to achieve excellent three-way catalytic activities. The light-off temperature (T 5 0 % ) of CO, C 3 H 8 and NO was 178 o C, 292 o C and 158 o C, respectively.