In the present investigation, Sargassum wightii and Turbinaraia conoides were analysed for the phytochemicals studies by qualitative and quantitatively. The samples of Sargassum wightii and Turbinaria conoides were collected from shores of Mandapam, (south east coast of India). The extracts were subjected to phytochemical analysis to detect the presence of following biomolecules using the standard qualitative procedures. Both sea weeds shows the different solvency in different extracts. Not a single solvent showing a complete result. A maximum of phytochemical yield by acetone extract of both sea weeds. The total phenolic and flavanoid content in the examined extracts ranged from 2.5 to 22.5 mg GA/g and 3.1 to 21.5 mg QE/g. respectively. The high concentrations of phenolics were obtained from ethanolic extract of S. wightii. The total phenolic content in the examined extracts ranged from 1.2 to 14.6 mg GA/g. The high concentrations of phenolics were obtained from Acetone extract of T. conoides. The total flavonoid content in the examined extract ranged from 1.1 to 22.5 mg QE/g. The highest concentration of flavonoid was measured in the acetone extract of T. conoides. In TLC analysis, the Rf values were recorded 0.58,0.78 and 0.68 in ethanol, petroleum and acetone respectively; 0.65, 0.69 and 0.74 in ethanol, petroleum ether and acetone extract respectively when a solvent phase of Benzene: Ethyl acetate (1:1) was used.