In　this　paper,　a　preliminary　investigation　on　the　photocatalytic　characteristics　was　carried　out　on　a　quartz　photo-reactor　and　a　Perspex　photo-reactor　respectively,　both　coated　with　photocatalyst　films.　Experimental　results　show　that　photocatalytic　degradation　of　the　methyl　orange　has　been　very　successful　at　all　the　inertial　concentrations　in　the　quartz　glass　reactor.　About　80%　of　the　methyl　orange　has　been　decomposed　within　2　hour.　Data　analysis　indicates　that　the　first　order　photocatalytic　reaction　rate　can　be　identified.　Comparison　of　the　experimental　data　reveals　that　light　intensity　has　a　very　strong　influence　on　the　photoreaction　rate,　which　implies　that　the　concentrated　light　system　will　be　suitable　in　the　solar　photocatalytic　treatment　of　wastewater.