This ultraviolet ray sterilization device has: a vessel into which a liquid is injected an ultraviolet ray radiating unit provided with a solid-state light-emitting element, which emits ultraviolet rays that can deactivate viruses and bacteria within the liquid, and a protruding section that is protruded into the vessel and radiates ultraviolet rays from the solid-state light-emitting element into the liquid and a scatterer supply unit that supplies, to around the protruding section, scatterers that scatter ultraviolet rays.本發明係一種紫外線殺菌裝置,包含:容器,其可注入液體;紫外線照射單元,其具備可發出使液體中的病毒或細菌失去活性的紫外線的固體發光元件與突出於容器中並使固體發光元件所發出的紫外線照射於液體中的突出部;以及散射體供給部,其對突出部的周圍供給使紫外線散射的散射體。1‧‧‧紫外線照射單元1a‧‧‧固體發光元件1c‧‧‧控制電路部1b‧‧‧突出部2‧‧‧容器2a‧‧‧液體2ba‧‧‧側壁2bb‧‧‧側壁2c‧‧‧內底面3‧‧‧散射體供給部3a‧‧‧氣泡產生單元3a1‧‧‧第3配管3a2‧‧‧驅動部4‧‧‧散射體4a‧‧‧氣泡5‧‧‧第1閥門5a‧‧‧第1配管6‧‧‧第2閥門6a‧‧‧第2配管8‧‧‧支持台10‧‧‧紫外線殺菌裝置