The aim of the study is that the extraction of phytochemicals from Catharanthua Roseus and the identification of antitumour agent based on docking studies The Phytochemical compounds were extracted and the effect of absorption were calculated based on Lipinski’s rule. The list of phytochemicals was tested with Parameters and the effective ligand has been found. Finally we have observed that the ligand n-hexadecanoic acid has satisfied the conditions of Lipinski’s rule and docked effectively with the receptor.