[ Objective ] To observe the therapeutic effect of Bushen Huoxie Decoction (mainly composed of Radix Rehmanniae Preparata, Fructus Corni, Rhizoma Dioscoreae, Carapax et Plastrum Testudinis, Radix Polygoni Multiflori, Fructus Lycii, Radix Morindae Officinalis, Herba Cistanches, Rhizoma Acori Tatarinowii, Radix Polygalae, etc. ) for the treatment of vascular dementia (VD) . [Methods] Eighty cases of VD were randomized into two groups by using random number table: group A ( n = 40) was treated with modified Bushen Huoxie Decoction and group B (n = 40) with duxil and nimodipine. After a 3-month treatment, the therapeutic effect of the two groups was evaluated, and mini-mental state examination (MMSE), activities of daily life (ADL) and blood rheology before and after treatment were observed. [Results] The total therapeutic effective rate was 80.0% in group A and 57.5% in group B, the difference being significant ( P