Insomnia and nightmares may be caused by environmental factors, psychological factors and disease factors. It is recommended to go to the hospital for examination or find out the clear cause by yourself, and then deal with it accordingly. 1, environmental factors: such as noisy sleep environment, too high or too low temperature, too bright lights, etc., can affect normal sleep, can lead to insomnia and nightmares, etc., need to pay attention to adjust the sleep environment; 2, psychological factors: work, study pressure, or mood anxiety, depression, emotional trauma and too much thought and other psychological factors It can lead to insomnia and nightmares, accompanied by palpitations, sweating and other autonomic disorders. Need to pay attention to the smooth mood, adjust the psychological pressure, if necessary, you can carry out psychological counseling; 3, disease factors: such as Parkinson’s disease, multi-system atrophy, Lewy body dementia and other neurological pathologies can cause rapid eye movement sleep behavior disorders. This is generally manifested as insomnia and nightmares, while symptoms of dream interpretation may occur. Such disorders require medical attention for appropriate examination and symptomatic standardized treatment. In addition, the symptoms of insomnia and nightmares can also occur due to excessive brain fatigue caused by high work and study intensity and frequent late nights.