观察了生脉液、脉络宁及两药合并静脉滴注对麻醉犬脑循环的影响。结果表明，生脉液（０．４ｇ／ｋｇ，ｉｖ）、脉络宁（５．５ｇ／ｋｇ，ｉｖ）及两药合并（生脉液０．４ｇ／ｋｇ＋脉络宁５．５ｇ／ｋｇ，ｉｖ）均能增加麻醉犬脑血流量，降低脑血管阻力，合并用药组效果优于单用组。各给药组均有明显的降低血压、减慢心率的作用，随着血压降低，脑血流量亦很快下降，但降低脑血管阻力的作用维持较久。 The effects of Shengmai and Mailuoning combined with intravenous drip on cerebral circulation in anesthetized dogs were observed. The results showed that Shengmai Liquid (0.4g / kg, iv), Mailuoning (5.5g / kg, iv) and the combination of the two drugs (Shengmai 0.4g / Can increase the cerebral blood flow of anesthetized dogs, reduce cerebral vascular resistance, combined with the drug group is better than single use group. Each administration group had obvious effect of lowering blood pressure and slowing down heart rate. With the decrease of blood pressure, cerebral blood flow decreased rapidly, but the effect of reducing cerebral vascular resistance was maintained for a long time.