Slow brain response, poor memory may be physiological conditions, but also may be cerebrovascular disease, Alzheimer’s disease and other causes, can be reduced stress, improve sleep, hyperbaric oxygen and the corresponding drugs, such as olanzapine, donepezil, immunoglobulin and other drugs for treatment. 1. Physiological conditions: such as work and life stress, long-term late nights lead to sleep deprivation, brain cells can not fully rest, so there can be memory loss, slow reaction phenomenon, the need to adjust the lifestyle, reduce the pressure of life and work, to ensure a good night’s sleep, a combination of work and rest, etc. can make the symptoms improve. 2. Cerebrovascular disease: post-stroke cognitive dysfunction can occur after a stroke, which can be manifested as memory loss, slow reaction, etc. Aspirin, clopidogrel and other drugs can be used to control the disease, and at the same time, drugs such as olanzapine can be given to symptomatic treatment. 3. Alzheimer’s disease: when the elderly have symptoms such as poor brain, memory loss, etc., it is necessary to consider the possibility of Alzheimer’s disease, which can be alleviated under the guidance of the doctor by taking drugs such as Donepezil orally. 4. Others: Carbon monoxide poisoning, autoimmune encephalitis, hypothyroidism, anxiety, depression and other conditions may cause brain failure, memory loss and slow reaction. Need to treat the primary disease, such as the use of hyperbaric oxygen, immunoglobulin, levothyroxine sodium tablets, sertraline, citalopram and so on. It is recommended that when patients experience sluggish brain response and poor memory, they should go to the hospital in time and under the guidance of the doctor for proper treatment. The drugs should all be used under the guidance of a doctor.