RESUMEN
Diabetes is a lifelong non-communicable disease caused by continuous high blood sugar,which poses a great threat to people's health. Diabetic cognitive dysfunction is the neurological impairment caused by the disorder of glucose and lipid metabolism in diabetes mellitus,which is characterized by inattention,decreased learning and memory ability,and then developed into alzheimer's disease.The pathogenesis of diabetic cognitive dysfunction is not fully understood.there are no effective drugs for this disease, hypoglycemic drugs are mainly used in the clinical treatment of diabetic cognitive dysfunction,and most drugs are accompanied by serious adverse reactions while playing a therapeutic role,drug resistance and liver injury are easy to occur.In recent years,there have been a lot of research achievements on the prevention and treatment of cognitive dysfunction in diabetes mellitus with traditional Chinese medicine(TCM).Modern medicine believes that diabetes belongs to the category of consumptive thirst of TCM, and the diabetic cognitive dysfunction is consumptive thirst combined with dementia and forgetfulness.Qi and Yin deficiency runs through the whole process of consumptive thirst,the Qi injured,Then the Qi defficiency would cause blood circulation malfunction, long-time poor blood condition would cause blood stagnating in the brain and blocking the brain,which would lead to the brain disease.TCM can improve the diabetic cognitive dysfunction by lowering blood sugar,inhibiting neuron damage, deposition of Amyloid beta(Aβ)and abnormal phosphorylation of Tau protein.This article reviews the pathogenesis of diabetic cognitive dysfunction from glucolipid metabolic disorders,disruption of blood brain barrier,inflammation,oxidative stress and non enzymatic glycosylation,insulin resistance in diabetes etc.,and explores the prevention and treatment of diabetic cognitive dysfunction by Chinese medicine,to provide a reference for the research and development of drug prevention and treatment of diabetic cognitive dysfunction.