A nasal suction device with a sterilizing function, comprising a casing, a suction head, a suction unit, a liquid collecting cup, an air pump, and a first ultraviolet germicidal lamp. The casing has a liquid collecting cup interface, and the suction head is coupled to the casing. The air suction unit is disposed in the casing and communicates with the suction head through the liquid collecting cup interface. The liquid collecting cup interface may be coupled with the liquid collecting cup. The air pump is coupled to the air suction unit and provides the suction power. The first ultraviolet germicidal lamp is arranged at the interface of the liquid collecting cup such that the ultraviolet light generated thereby may illuminate the liquid collecting cup. Therefore, when the nasal suction device inhaled, the plurality of components may be sterilized and disinfected at the same time, and thus the nasal suction device may be used safely, conveniently, and hygienically.一種具殺菌功能的吸鼻器,包括殼體、吸取頭、吸氣單元、集液杯、空氣泵、以及第一紫外線殺菌燈,殼體具有集液杯介面,吸取頭連接於殼體,吸氣單元設置於所述殼體內並透過集液杯介面連通至吸取頭,集液杯介面可裝接集液杯,空氣泵耦接吸氣單元並提供吸氣動力,第一紫外線殺菌燈設置於集液杯介面為使其產生的紫外光線可照射集液杯。籍此,吸鼻器在吸氣時,可同時對多個部件殺菌、消毒,達到使用安全、方便、衛生的目的。