A piping device for improving effects of irradiating fluid has a body, a passage module, and multiple light-emitting elements. The body has a cavity and multiple slits. The cavity is disposed inside the body. The multiple slits are disposed through the body at spaced intervals, and communicate with the cavity. The passage module has a transparent tube and a guiding component. The transparent tube is disposed in the cavity of the body. The guiding component is spiral, and is disposed in the transparent tube. The multiple light-emitting elements are mounted to the body in the multiple slits separately, and surround the passage module.本新型係一種改善照射流體效果的管路裝置，其係包括有一本體、一流道模組、複數照射模組以及兩座管，其中該流道模組具有一螺旋狀的流道，並設於該本體內，該複數照射模組與該本體相結合並位於該流道模組周圍，該兩座管設於該本體兩端，在流體經由其中一座管流入再流向另一座管的過程中，會順著該流道模組而在該複數照射模組間螺旋狀流動，因此會在照射範圍內增加流體滯留的時間，因此，流體受到的照射時間較長，而可以取得較佳的培養、抑制或殺死流體中有機體的效果，藉以提供一種改善照射流體效果的管路裝置。
