Aqueous and ethanol extracts from the bark of Ricinus communis were investigated for their anthelmintic activity against Pheretima posthuma and three concentrations (50, 75 and 100 mg/ml) of each extract were studied for activity, in which paralysis and death time of the worm. Both the extract exhibited remarkable anthelminthic activity at all three concentrations. Albendazole suspension is used as standard reference (25 mg/ml) and distilled water as control. Therefore the aqueous and ethanol extract of bark of Ricinus communis has been demonstrated for the first time.