Human memory is a functional response of the brain. The brain is the sea of marrow, the kidneys govern the bones, and the marrow is formed. Therefore, the decline of memory is related to the deficiency of kidney essence. The decline of memory in old age and infirmity is a normal physiology. The memory loss of young people is usually caused by staying up late to damage the kidney essence. In this case, as long as you live a regular life and work and rest time, it will generally recover gradually without special treatment. Grumpy temper will turn into fire over time, damage liver yin, liver and kidney are homologous, and memory loss will also occur after a long time. You can take Liuwei Dihuang Pills and Danzhi Xiaoyao Pills.