A wearable device assembly is provided. The wearable device assembly includes a wearable device and an accessory. The accessory includes a housing, a sensing module, and a suction-cup member. The sensing module is disposed on the housing for detecting a physiological signal of an user. The suction-cup member is connected to the housing and detachably adhered to a surface of the wearable device.一種穿戴式裝置組件,包括一穿戴式裝置以及一配件。前述配件包括一殼體、一感測模組以及一吸盤構件。前述感測模組設置於前述殼體,可用以感測一使用者之生理訊號。前述吸盤構件連接前述殼體,並以可拆卸的方式吸附於前述穿戴式裝置表面。100‧‧‧配件110‧‧‧殼體120‧‧‧環狀構件130‧‧‧吸盤構件
