A night in the dream may be with the mental state, long-term use of psychotropic drugs, bad habits, their own diseases or some other factors, as follows: 1, mental state: mental overstress, anxiety, such as encountering certain things can not think or can not be quickly resolved, repeated thinking, overthinking may lead to prolonged dreaming symptoms; 2, the long-term use of psychotropic drugs: such as anti-anxiety, depression, drugs, also easily lead to the emergence of dreams, mental weakness, fatigue and other symptoms. Drugs, also easy to lead to the emergence of dreams, mental weakness, fatigue and other symptoms; 3, bad habits: drink excitatory beverages before going to bed, strong tea or play computer games, may lead to brain cells in a long time in the state of excitability, the emergence of has been dreaming symptoms; 4, their own disease: heart disease is always panicky, chest tightness, gastric disease with stomach bloating, acid reflux symptoms, as well as chronic consumptive diseases of the patient, may The symptoms of long-term dreaming; 5, other: character is more introverted, easy to drilling, as well as work and life stress, neurasthenia and so on have a relationship.