Abstract:Based on the theory of “chronic disease entering the collaterals”, this paper analyzes the pathogenesis of vascular dementia, and believes that the clinical manifestation of vascular dementia conforms to the disease characteristics of “chronic disease entering the collaterals”, and the onset conforms to the pathogenesis characteristics of “chronic disease entering the collaterals”, which belongs to the category of collateral diseases in Chinese medicine. The clinical treatment of this disease reflects the characteristics of “collateral disease is used for dredging”, and the flexible use of the method of dredging collaterals achieves good results. Therefore, the theory of “chronic disease entering collaterals” plays an important guiding role in the treatment of vascular dementia. At the same time, it is proposed that on the basis of a full understanding of the pathogenesis of collateral diseases, it will be more beneficial to the prevention and treatment of chronic and refractory diseases such as vascular dementia when thinking carefully about the idea of pre-treatment contained in “chronic disease entering the collateral”, paying equal attention to prevention and treatment in clinical treatment, and blocking or eliminating the possible pathological factors of “chronic disease”.