The harmful effects of alcohol on the brain are mainly reflected in memory loss, poor concentration, reduced learning ability, lower IQ, and even cognitive deficits. Prolonged alcohol abuse can cause severe brain atrophy, inability to walk upright, and dementia. In clinical practice, the amount of alcohol should be strictly limited, and a small amount of alcohol can improve circulation, but many patients drink a lot of liquor, beer and other strong alcohol in daily life, which will aggravate the condition, especially damaging the hippocampus and amygdala of the brain, severely splitting short-term memory and long-term memory, causing severe memory degeneration and then Alzheimer’s disease.