Seaweeds have been one of the richest and most promising sources of bioactive primary and secondary metabolites. The preliminary screening was performed by Harbone method the results of the phytochemical screening reveled presence of flavonoids , alkaloids, steroids , sapnonins and phenols in Ulva lacuta and Enteromorpha intestinalis. The crude extracts of Ulva lacuta and Enteromorpha intestinal is screened for the presence of active components flavonoids , alkaloids, steroids, sapnonins and phenols of were carried out by Thin Layer Chromatography method. The quantitative estimation in above two species showed the presence of Proteins and lipid in moderate amount. The aim of the present study is to evaluate the phytochemical constituents of the Ulva lacuta and Enteromorpha intestinalis