Dreaming is a normal physiological phenomenon of human beings. The main reasons for patients to dream in bed for a long period of time are considered as follows: 1, mainly psychological factors, if patients are usually more emotionally tense, more anxious or more stressed easily lead to emotional instability, patients are prone to the problem of long-term dreaming. Especially in the light sleep period, some of the patient’s brain cells are still in an excited state, easy to produce dreams. 2, with the patient’s physiological factors, if the patient is too full before bed, too hungry or a lot of activity before bed leading to the cerebral cortex in an excited state, as well as watching the plot of intense film and television drama are likely to lead to the patient dreaming.