This study was done to evaluate hepatic and splenic arterial blood flow and arterial resistance indices by duplex color Doppler ultrasonography in patients with different grades of liver cirrhosis and portal hypertension. This study included 60 patients who were suffering from portal hypertension due to liver cirrhosis and had oesophageal varices. They were classified into three groups according to Child Pugh’s classification. A fourth group consisted of 20 control subjects were used as a reference range for Doppler parameters. Hepatic arterial resistance indices increase in cirrhosis. The correlation between hepatic arterial resistance and the severity of portal hypertension suggests that the mechanism responsible for the increase arterial resistance is parallel to that responsible for the increase in portal resistance. Splenic artery resistance indices are increased in cirrhotic patients and they are not correlated with the severity of portal hypertension but correlated with the degree of oesophageal varices.