To manufacture a composite photocatalyst in which deodorizing performance generated by the adsorption and decomposition actions and desorption performance of an adsorption component compatible with each other by compositing a zeolite photocatalyst carrying copper, silver, vanadium, iron, titanium, chrome and a titanium photocatalyst carrying palladium and platinum together.

A deodorizing device 8a comprising composite photocatalysts constituting a deodorizing filter device set on the inside of an air suction grille of a sealing embedded air cleaner is provided with a flexible sheet like base 80, and a number of zeolite photocatalysts 81... carrying copper dispersingly are provided on one side face of the base 8a. Also titanium photocatalysts 82... carrying palladium dispersingly are carried uniformly so as to be in the state of integrally all composited together on the surfaces of respective zeolite photocatalysts 81.... The adsorption and the oxidization decomposition of odorous gas and toxic gas are carried out simultaneously by both functions of an adsorbent and the photocatalyst of the photofatalysts 81... in the state of turning on a light source lamp and emitting ultraviolet rays.