The present invention discloses a sleep monitoring device for attaching to a body. The sleep monitoring device comprises a carrier, sensing module and lighting module. A sticking layer is on a side of the carrier. The sensing module is on the sticking layer. The sensing module comprises a sensing unit and a processing unit. The sensing unit senses a physiology state of the body for generating a sensing signal. The processing unit analysis a sleep state of the body according to the sensing signal, and generates a processing signal corresponding to the sleep state. The lighting module is on the sticking layer, and switches a luminous state according to the processing signal. Thereby, it is easy to recognize the sleep state of the body according to the luminous state.本創作係揭露一種睡眠監測裝置,適用於貼附在受測人體上,睡眠監測裝置包含載體、感測模組及發光模組。載體之一面具有黏貼層。感測模組設於黏貼層上,感測模組包含感測單元及處理單元,感測單元感測受測人體之生理狀態以產生感測訊號,處理單元依據感測訊號分析受測人體之睡眠狀態,且產生對應睡眠狀態之處理訊號。發光模組設於黏貼層上,發光模組依據處理訊號切換發光顏色。藉此,可簡易地由發光顏色之切換辨別受測人體之睡眠狀態。1‧‧‧睡眠監測裝置11‧‧‧載體12‧‧‧感測模組121‧‧‧感測單元122‧‧‧處理單元13‧‧‧發光模組