Insomnia is a condition of sleep quality dissatisfaction mainly due to insomnia, other symptoms are secondary to insomnia, including difficulty falling asleep, sleep is not deep, easy to wake up, dreamy, waking up early, not easy to fall asleep again after waking up, feeling fatigue or lack of wakefulness after waking up, sleepy and thinking about sleep during the day, etc. In summary, it includes four major aspects: 1, unable to fall asleep (due to too much anxiety and very that relaxed to fall asleep): also known as onset insomnia, refers to more than 30 minutes after the lights in the room to fall asleep; 2, unable to maintain sleep (after waking up at night, it is difficult to fall asleep again): also known as intermediate insomnia or sleep maintenance difficulty insomnia, refers to frequent waking up after falling asleep and or waking up at night for more than 30 minutes. 3.Inability to fall asleep and maintain sleep: also called mixed insomnia, which refers to a combination of difficulty in falling asleep and maintaining sleep. 4. Ineffective sleep (feeling tired the next morning after sleeping all night): or physical non-restorative sleep, insomnia patients have difficulty falling asleep or staying asleep, and cannot refresh or rejuvenate after waking up. Typical insomnia is caused by stress leading to recurrent insomnia, and the insomniac will become increasingly fearful of insomnia and overly concerned about its adverse consequences, thus creating a vicious cycle that makes insomnia persistent. All insomnia should have symptoms not only at night, but also during the day, and the main symptom is the impact on the person’s daytime activities. For example: lack of wakefulness or inability to regain energy in the morning or throughout the day; fatigue or sleepiness during the day; inability to concentrate during the day; impairment of cognitive function that affects the ability to work or study during the day. Anxiety disorders are dominated by difficulty falling asleep, while depression manifests as persistent early awakenings. Psychological state: anxiety and fear of insomnia, often fear of darkness, fear of closing the eyes and going to bed. Worries about insomnia can often reinforce insomnia. People with insomnia feel nervous, anxious, worried, or depressed when going to bed and often think too much about getting enough sleep, personal problems, health conditions, or even death. They often try to relieve their nervousness by taking medication or drinking alcohol. They often feel mentally and physically fatigued and unable to freshen up in the early morning, and feel depressed, worried, nervous, irritable and overly concerned about their situation during the day.