Abstract:Perioperative neurocognitive disorders(PND) is an important complication of surgical anesthesia, characterized by impairment of memory, attention, language comprehension and social ability, which can lead to decreased quality of life, prolonged hospital stay, and increased mortality. Due to high incidence, it has a great impact on postoperative recovery and quality of life of patients; it also can cause heavy economic burden to the society and families, and become an important public health problem. Advanced age is a major risk factor for PND, so the study of PND has become one of the research hotspots of senile diseases. The occurrence of PND may be related to multiple factors such as anesthesia, surgery and patients themselves, but its pathogenesis is still unclear. There is lack of a clear definition and effective diagnostic test, the clinical study of PND seems to be more complex. Preoperative evaluation of neurocognitive function and risk factor identification is important to determine the true extent of PND and to look for any causal relationship associated with anesthesia and surgery, but to date, no single anesthesia technique, drug, or monitoring pattern has been shown to reduce the incidence of PND. This article summarizes studies on PND in recent years and provides relevant prevention recommendations for patients at high risk of PND.