Dreaming is a normal physiological phenomenon of human beings, regardless of men and women, young and old, high and low, everyone has dreams, which are inherent to human beings. If you often dream during sleep, as long as it does not affect the work and life during the day, even if you dream every day, it is a normal phenomenon. Dreams are the image activities caused by various stimuli inside and outside the body or external stimuli remaining in the brain during sleep, which is a kind of mental activity induced by various disturbing factors inside and outside the body, such as emotions, hunger and satiety, and labor and rest. Normal human sleep consists of non-REM sleep and REM sleep. During the whole night sleep, from non-REM sleep to REM sleep, about every 90-100 minutes is a cycle, with alternating intervals, there will be 5-6 cycles per night. In non-REM sleep our physical strength is restored, while in REM sleep our cerebral metabolism and cerebral blood flow increase, sensory function decreases significantly, muscle tone decreases, energy and memory are gradually restored, and dreams appear in the REM period. In other words, during the stage of dream generation in sleep, our limbs are limp and our brain is thinking. From this point of view, dreaming is an own need to exercise human brain function. There is an ancient saying in China that “fools have few dreams”, which is a bit arbitrary, but also from another aspect that fools are rarely dreaming, on the contrary, those who dream more are mostly richer in thinking and imagination. To sum up, it is normal to dream every day, and dreaming can not only maintain the normal thinking and healthy development of the brain, but also regulate the psychological balance of the human body. Of course, do not sleep, as long as the sleep nightmares and continuous interference with sleep, this should be a different story, need to pay attention to and promptly go to the hospital for examination and treatment.