The most fascinating aspect of sleep is that it’s highly connected to almost every aspect of our waking lives and everyone’s sleep needs, patterns, and influences are highly individualized. This matters because it means that the best way to better rest and recovery through sleep science is an awareness of how sleep impacts our moods and feelings and health and how our lives in return - impact the way we sleep. When sleeping at night, the brain wave is detected by using the TGAM module carried in Divcap. When the degree of brain meditation is in the range of 0 ~ 60, Divcap will play the corresponding music and release the corresponding odor to promote the user to sleep from the dimensions of hearing and smell. Use scientific sensory sleep knowledge to treat people with sleep disorders from the aspects of hearing and smell. This smart nightcap can monitor brain wave data in real-time and provide feedback, which plays an important role in improving sleep quality and quality of life.