Abstract: With the aging of population and the progress of medical technology, elderly patients who accept surgical treatment increase and the incidence of postoperative cognitive dysfunction (POCD) increase. Both in the medical level and social level and economic level, to research the occurrence mechanism and protection and treatment of POCD is of great significance. Many research show that some traditional Chinese medicine preparations can protect neuron and improve learning and memory ability of the brain through improving blood circulation of the brain and reducing inflammation after brain injury and adjusting the neurotransmitter in the brain secretion. Those indicate that traditional Chinese medicine preparation maybe a great significance for protection and treatment of POCD.

Key words: Postoperative cognitive dysfunction, traditional Chinese medicine preparation, Neuron protection, elderly patient