Toluene($C_6H_5CH_3$) gas sensors were fabricated using $PtO_x$ loaded with SWNTs by a new deposition method. The nanoparticle powders of SWNTs-$PtO_x$ composite were deposited on Si wafer substrates by a vacuum filtering deposition method. The fabricated sensors were tested against toluene gas which is a kind of the Volatile Organic Compounds. The composition ratio that exhibited the highest response to toluene gases was SWNTs : $PtO_x;=;99:1$ in wt% ratio at operating temperature of about $150^{circ}C$. The response and recovery times of the sensors were as short as less than 1 min., respectively.