Recently, I have been having nightmares: first of all, consider that the patient has more nightmares due to the stressful work, stressful life, psychological and physical health is affected. Dreaming is a relatively common phenomenon in life, but nightmares are often an emergency response to psychological trauma or after being threatened or hit by something serious. If recurrent nightmares occur, patients are advised to take sedative and sleeping medications to improve them. Secondly, if the patient has a sleep disorder, accompanied by anxiety and tension, nightmares can also occur, which will affect the patient’s sleep quality over time, aggravate anxiety and depression, and can develop into anxiety disorder and depression. Then, sleep always nightmares, also seen in patients with drug and alcohol abuse, due to the role of drugs or alcohol, can appear the phenomenon of nightmares.