Awearable device is disclosed. The wearable device comprises an ambient temperature sensor, an ambient humidity sensor, an ultraviolet detector, a skin temperature sensor, an alarm module and a process unit. The ambient temperature sensor detects an ambient temperature of the wearable device. The ambient humidity sensor detects an ambient humidity of the wearable device. The ultraviolet detector detects an ultraviolet index received by the wearable device. The skin temperature sensor contacts with the skin of a user and detects a skin temperature of the user. The alarm module generates at the least one alarm signal Selectively. The process unit stores at least one preset heatstroke condition and determines according to informations comprising the ambient temperature, the ambient humidity, the ultraviolet index and/or the skin temperature. When the determining result meets the preset heatstroke condition, the process unit starts the alarm module to genetates at the least one alarm signal corrposponding to the preset heatstroke condition.本案關於一種穿戴式裝置,包括:環境溫度感測器,偵測穿戴式裝置之環境溫度;環境濕度感測器,偵測穿戴式裝置之環境濕度;紫外線感測器,偵測穿戴式裝置所接收的紫外線指數;皮膚溫度感測器,與使用者的皮膚接觸而偵測使用者的皮膚溫度;警告模組,選擇性地產生至少一警告訊息;以及處理單元,係儲存至少一預設中暑條件,且依據環境溫度、環境濕度、紫外線指數及/或皮膚溫度之資訊進行判斷,並在判斷結果符合預設中暑條件時,啟動警告模組產生對應預設中暑條件之至少一警告訊息。1‧‧‧穿戴式裝置10‧‧‧環境溫度感測器11‧‧‧環境濕度感測器12‧‧‧紫外線感測器13‧‧‧皮膚溫度感測器14‧‧‧警告模組140‧‧‧顯示裝置141‧‧‧震動裝置142‧‧‧聲音裝置15‧‧‧處理單元16‧‧‧無線模組9‧‧‧行動電話
