Poor sleep in hospitalized patients is a significant problem that has been ignored for a long time, mainly manifested as shortened sleep duration and decreased sleep quality. There are many factors that affect the sleep of patients, primarily noise, nursing care, and lighting. Pain is the main factor that affects the sleep of patients after surgery. In most cases, poor sleep in hospitalized patients can be prevented and treated. In order to solve the problem of poor sleep in hospitalized patients, it will need multiple measures which include improving the awareness of sleep problems, strengthening sleep diagnosis, routine evaluation of sleep, creating a good sleep environment, reducing the median sound level in hospital, optimizing ward nursing management, reducing the interference of nursing care on sleep and increasing necessary non⁃drug and drug intervention. Poor sleep in hospitalized patients is related to medical quality and patient safety, which needs the attention of the whole society, health management leaders, hospital management departments, and especially the whole medical care team.