A tent cloth canvas coated on the surface thereof with a photocatalyst, wherein (1) the adhesiveness between a photocatalyst and the tent cloth canvas is kept satisfactorily for an extended time, (2) an anti-fouling capability is kept for a long time, and (3) the photocatalyst carried on the tent cloth canvas does not promote a lowering with time of a tear strength. A tent cloth canvas coated on the surface thereof with a photocatalyst is used, wherein more than 50% in amount of a plasticizer contained in the canvas remains in comparison with that at an initial stage 1500 hours after the canvas is subjected to a sunshine carbon arc type accelerated weathering test as specified in JIS-K5400, or after 3-year outdoor exposure; and a tent clothe canvas having the above properties and structures further contains a plasticizer having a molecular weight of at least 400, and/or a plasticizer migration restricting layer is provided in the middle of the tent cloth and photocatalyst coating layer. |