Many people suffer from insomnia, and there are many patients who come to the hospital with insomnia as their main symptom, and many of them ask, “Why do I have insomnia? I don’t want to think about anything, but I still can’t sleep”, “I can only sleep for a while with some wine, and then I can’t sleep even more”. In the doctor’s opinion, the causes of insomnia are as follows: physical illness, drug-induced insomnia, such as your recent illness, a number of drugs will cause insomnia; hyperthyroidism, the basal metabolism is too high, accompanied by insomnia symptoms; cold nasal congestion, can not sleep; drink coffee, hormones can not sleep, etc.. This type of insomnia will improve on its own as the body gets better sleep. Environmental factors: business trips, travel and other changes in the place of residence, or increased noise and light near the residence, etc. If the potential anxiety and depression is not detected, if insomnia is accompanied by decreased energy, depressed mood, disinterest in things, and reduced interaction with people, it is necessary to clarify whether there is depression; if insomnia is accompanied by polysomnia (a lot of ideas in the head, like to think and stop) panic, agitation, fidgeting, inexplicable pain in the body, it is necessary to clarify whether there is anxiety; if insomnia is accompanied by whispering, suspicion, nervousness. If an elderly patient has day-night reversal, sleeps during the day but not at night, and has memory loss, is always worried about someone stealing something from the house, or has suspicion, it is necessary to investigate Alzheimer’s disease; regardless of whether the above categories are caused by triggers, if they last for a short period of time, they can adjust themselves and do not need to consult a doctor; if they last for a long period of time and cannot adjust themselves, it is recommended to consult a psychologist at a hospital. Psychological counseling, if necessary, medication.