PROBLEM TO BE SOLVED: To provide a mosquito catcher that improves an efficiency of carbon dioxide generation by a photocatalyst by using an anatase-type titanium oxide photocatalyst, thereby improving a mosquito catching efficiency.SOLUTION: A mosquito catcher 1 using the titanium oxide photocatalyst according to the present invention is provided with: an organic gas supply part 10 that generates an organic gas； an ultraviolet light irradiation part 20 that irradiates an ultraviolet light； a photocatalyst part 30 having an anatase-type titanium oxide photocatalyst sheet 31 that receives the ultraviolet light and generates a carbon dioxide by decomposing the organic gas； a storage container 40 that has a window 41 and stores the organic gas supply part 10, the ultraviolet light irradiation part 20, and the photocatalyst part 30； a mosquito selection net 50 that covers the window 41 and has a mesh of a size slightly larger than a size which a mosquito can pass through； and a catching part 60 that catches the mosquito that passes through the mesh and enters into the storage container 40.SELECTED DRAWING: Figure 1
