Objective: To observe the effects of Sanchong Buyang Huanwu Decoction on acute cerebral infarction and its inflnences on hemorheological parameters. Method: One hundred patients with acute cerebral infarction were randomly divided into treatment group (52 cases) and control group(48 cases).The control group was treated with conventional treatment (intravenous infusion of Danshen injection

edaravone injection and ozagrel liquid

oral enteric-coated aspirin tablets

atorvastatin calcium).The treatment group took Sanchong Buyang Huanwu Decoction on the basis of conventional therapy. The 2 groups were continuously treated for 30 days.Changes in the clinical outcome (neurological impairment)

and blood rheological parameters(blood viscosity and mean flow velocity) of two groups were observed before and after treatment. Result: After treatment for 30 days

the total effective rate in the treatment group was significantly higher than that in the control group (P<0.05).The blood viscosity and neurological deficit scores of two groups were significantly lower than that before treatment (P<0.05 or P<0.01).The blood viscosity and neurological deficit scores of the treatment group were significantly less than that of the control group (P<0.05). The blood flow velocity of two groups were significantly higher than that of before treatment (P<0.05 or P<0.01)

The blood flow velocity of the treatment group were significantly higher than the control group (P<0.05). Conclusion: Sanchong Buyang Huanwu Decoction can significantly reduce blood viscosity

significantly increase cerebral blood flow

it is safe and effective in the treatment of acute cerebral infarction.