The utility model relates to a portable ultraviolet disinfection device, which comprises a container and a sterilization unit.The container comprises a lid part and a can part matched with the lid part to define a holding space suitable for containing at least one substance to be sterilized.The sterilizing unit is arranged in the container and includes a power module and a sterilizing module. The power module has an input interface for receiving an input power supply and a power circuit for connecting the input power supply and converting the input power supply into an internal power supply for output. The sterilizing module receives the internal power supply and includes a power circuit for projecting ultraviolet rays to the storage space to treat The ultraviolet projection part where the sterilizer is sterilized.By setting the input interface to provide the internal power supply, the stable voltage supply of the sterilization module can be provided, so the sterilization effect is relatively stable.一種可攜式紫外線消毒裝置，包含一個容器及一個滅菌單元。該容器包括一個蓋部及一個與該蓋部相配合界定一個容置空間的罐部，該容置空間適用於容置至少一待滅菌物。該滅菌單元設置於該容器，並包括一個電源模組及一個滅菌模組，該電源模組具有一個接收一輸入電源的輸入接口，及一電連接該輸入接口並將該輸入電源轉為一內部電源輸出的電源電路，該滅菌模組接收該內部電源，並包括一個朝該容置空間投射紫外線以對該待滅菌物進行滅菌的紫外線投射部。藉由設置該輸入接口以提供該內部電源，可以提供該滅菌模組穩定的電壓供給，因此具有較穩定的消毒殺菌效果。
