A kind of finger cot type phototherapy device includes phototherapy fingerstall and phototherapy mould group. Phototherapy fingerstall includes fingerstall ontology and magnetic element, and fingerstall ontology includes fingerstall end and connecting pin； Phototherapy mould group has phototherapy component, and phototherapy component includes light-emitting component and magnetic induction switch mould group. Fingerstall end offers fingerstall slot, and finger of the fingerstall slot to be arranged what user, connecting pin is oppositely disposed with fingerstall end, and offers link slot, and link slot system is connected to what fingerstall slot, and what connecting pin is arranged in magnetic element. Phototherapy component plugs what link slot pluggablely, light-emitting component is to project treatment light beam towards fingerstall slot, use the irradiation for making finger by treatment light beam, magnetic induction switch mould group electrical connection what light-emitting component, uses the magnetic force for sensing magnetic element when phototherapy component plugs what connecting slot and opens light-emitting component.一種指套式光療裝置，包含光療指套與光療模組。光療指套包含指套本體與磁性元件，指套本體包含指套端與連接端；光療模組具有光療組件，光療組件包含發光元件與磁感應開關模組。指套端開設有指套槽，指套槽用以套設於使用者之手指，連接端與指套端相對地設置，並開設有連接槽，連接槽係連通於指套槽，磁性元件設置於連接端。光療組件可插拔地插設於連接槽，發光元件用以朝指套槽投射出治療光束，藉以使手指受到治療光束之照射，磁感應開關模組電性連結於發光元件，藉以在光療組件插設於連結槽時感應到磁性元件之磁力而開啟發光元件。
