The main causes of dreaming are the following: 1. Environmental factors, such as noisy sleep environment, unsuitable room temperature and other environmental factors can affect sleep, resulting in insomnia and dreamy symptoms. 2. Age factors, as people grow older, their sleep will be correspondingly shortened, which can also cause symptoms of sleep disorders. 3. The symptoms of insomnia and excessive dreaming can be caused by drugs such as caffeine, aminophylline and hormonal drugs. 4, disease factors, such as itchy skin, cough, frequent urination at night, painful irritation and other disease symptoms can affect sleep. 5, psychological factors, such as anxiety, depression, etc., patients are often accompanied by sleep disorders, prone to insomnia and excessive dreaming symptoms.