The invention relates to a mosquito catching lamp, and its internal components include a top cover, a power supply device, a control circuit, more than one lighting unit, a titanium dioxide fastener, a fan and a holding tank. A trapping space is formed by a frame, under the trapping space is the fan, and under the fan is connected with a holding groove, which is a mosquito catching lamp that uses photocatalyst reaction to generate titanium dioxide into carbon dioxide to lure mosquitoes closer.本創作係關於一種捕蚊燈,其內部構件包括有一上蓋、一供電裝置、一控制電路、一個以上的照明單元、一二氧化鈦固定件、一風扇以及一容置槽。藉由框架形成一誘入空間,於該誘入空間下方為該風扇並於該風扇下方連接容置槽,其為利用光觸媒反應產生將二氧化鈦轉化為二氧化碳,誘使蚊蟲靠近之捕蚊燈。