The related a kind of Bottle cap structure for having ultraviolet sterilization apparatus of this creation system a comprising bottle cap body and a sterilizing unit. Bottle cap body has a top, an outer circle wall portion, an inner circle wall portion, an installing space and an accommodation space； It installs outside space Jie what, between inner circle wall portion. Inner circle wall portion is generally between light transmission and the what that is situated between installing space and accommodation space. Sterilizing unit sets plural ultraviolet light portion and a power supply unit. Plural ultraviolet light portion is set on what bottle cap body, and can be carried out installing space and be irradiated towards accommodation space, accommodation space towards at least one kind ultraviolet light in installing space, and carries out sterilization process to accommodation space, and power supply unit is to power. Therefore this case has both the advantages that envelope bottle can be sterilized, be not required to cleaning solution not and influence storing in bottle, Stand-Alone Biocidal structure is applicable in size bottleneck and tool automatic/hand sterilization.本創作係有關一種具紫外線殺菌裝置之瓶蓋結構，其包括一瓶蓋主體及一殺菌裝置。瓶蓋主體具有一頂部、一外圓牆部、一內圓牆部、一裝設空間及一容納空間；裝設空間介於外、內圓牆部之間。內圓牆部概呈透光並介於裝設空間與容納空間之間。殺菌裝置設複數紫外線部及一電源部。複數紫外線部設於瓶蓋主體上，且可進行裝設空間朝容納空間、容納空間朝裝設空間的至少其中之一種紫外線照射，而對容納空間進行殺菌作業，電源部用以供電。故，本案兼具封瓶即可進行殺菌、不需清潔液不影響瓶內儲物、獨立殺菌結構適用同尺寸瓶口與具自動/手動殺菌等優點。
