In the Invaluable Prescriptions for Ready Reference，Sun Simiao put forward that “heart lying before eyes lying while sleeping”，which means calming down is the premise of falling asleep.The sleeping regimen of “heart lying before eyes lying” advocates the creation of a peaceful sleeping environment through self-adjustment of mind and intervention of the internal and external treatment of traditional Chinese medicine(TCM)，to assist the human body to get healthy sleep.It reflects the importance of “heart” to sleep.