Dreams are normal physiological phenomena that accompany human sleep and are normal as long as they do not affect daytime life and work. If someone wakes up and feels tired and mentally ill, he or she is dreamy, which is a manifestation of sleep disorder. The common reasons are as follows: 1. Environmental factors: sleep environment changes lead to unrealistic sleep, stimulated by light, temperature, sound, etc.; 2. Psychological factors: daytime thinking, nighttime dreaming, if you are always thinking about something during the day, psychological pressure will mostly lead to the recurrence of this thing in sleep; 3. Physical factors: some discomfort will be brought to the dream when human is awake, some diseases will be reflected in the dream, such as respiratory system diseases often dream of poor breathing, etc. Long-term use of some drugs will also lead to excessive dreaming. The treatment method of excessive dreaming includes behavioral therapy and drug therapy, first of all, we should look for the causative factors, appropriately carry out psychological counseling to reduce the psychological pressure, choose a suitable sleep environment, develop good sleep habits, combine with scientific and reasonable diet synergistic adjustment, serious people can follow the principle of individualization to choose the diagnosis and treatment of Chinese medicine, according to different patients to carry out different symptomatic treatment, some can also choose western medicine sedative, hypnotic drugs to treat. Some can also choose western sedative and hypnotic drugs to treat. In conclusion, dream is a subconscious expression of emotion, most of the dreams can be treated by self-relaxation and release of repression, long-term dreaming will affect the brain function and need to be adjusted in time.