Dreams are normal human physiological phenomena, which are induced by various disturbing factors inside and outside the body. As long as it does not affect the daytime life is normal. The common reasons for frequent dreaming are as follows: psychological factors: dream is a special manifestation of the internal divine activity of human body, and it is often said that “there are thoughts during the day and dreams during the night”. Physiological factors: too full or too hungry before going to bed, daily smoking or drinking a lot of alcohol, drinking coffee, tea or functional drinks, strenuous exercise before going to bed causing mental exhilaration, sleeping too long during the day, etc.; poor sleep environment or change of sleep environment leading to unrealistic sleep, stimulated by various environmental factors outside the body, such as light, temperature, sound, etc. Somatic factors: some discomfort in human waking hours can be brought to dreams, and some diseases can be reflected in dreams, for example, neurological diseases can often dream of being hit on the head, auditory center lesions can appear strange sounds in dreams, respiratory system diseases can often dream of poor breathing, etc.; and long-term use of some drugs can also lead to excessive dreams. In short, dreams are the result of a variety of complex factors, if you often dream, you should look for triggers from the above reasons and solve them in time, and you can also have a healthy sleep through self-adjustment.