An air purifier with ultraviolet sterilization includes a casing, a filter material, a fan and an ultraviolet germicidal lamp. The casing has an air outlet, an air inlet, and an air guide space connected to the two. The filter material is designed At the inner side of the air inlet and adjacent to the air guiding space, the fan is arranged in the air guiding space to draw in external air from the air inlet and then discharge from the air outlet. The ultraviolet germicidal lamp is arranged at the air inlet And located outside the filter material, the ultraviolet germicidal lamp includes a plurality of UVC-LEDs (short-wave violet light emitting diodes) with ultraviolet wavelengths between 200nm and 280nm, which can irradiate and sterilize the air entering through the air inlet； In this way, it has the effects of good sterilization effect, long service life, low energy consumption, no pollution and convenient use.一種具紫外線殺菌之空氣清淨機包括一機殼、一過濾材、一風機及一紫外線殺菌燈，該機殼具有一出風口、一入風口及連通兩者之一導風空間、該過濾材設於該入風口內側鄰近該導風空間處，該風機設於該導風空間之中可將外部的空氣由該入風口抽入然後由該出風口排出，該紫外線殺菌燈設於該入風口處且位在該過濾材外側，該紫外線殺菌燈包含有紫外線波長介於200nm~280nm之間之複數UVC-LED(短波紫光發光二極體)，可對由該入風口進入的空氣進行照射殺菌；藉此係使其具有殺菌效果佳、使用壽命長、能源消耗低、無汙染及使用方便之功效。
