In present work, an attempt has been made for photocatalytic removal of Ag (I) from its aqueous solution. The photoreduction of Ag+ ions at the surface of SrWO4 has been investigated. The progress of reaction was observed by atomic absorption spectrophotometrically (AAS). The effect of variation of different parameters like pH, concentration of silver (I), amount of photocatalyst, light intensity etc. on the rate of reaction was observed. A tentative mechanism for this reaction has been proposed.