In the present study, the anti-inflammatory activity of aqueous extract of Portulaca oleracea (POE 200, 400 and 600mg/kg) was studied using carrageenan induced paw oedema in albino rats. The mean increase in paw volume was recorded. POE produced significant (p<,0.01) anti-inflammatory activity when compared to the control. The anti-inflammatory action of POEcan be attributed to its flavonoid contents which are known to act through inhibition of prostaglandin biosynthesis. However, the test drug at maximum dose (600mg/kg) was found to be less effective than the standard drug, aspirin (100mg/Kg).