The plant Eichhornia crassipes L. is a very promising plant which belongs to Family Euphorbiaceae. Proximate, qualitative and quantitative phytochemical analysis of this plant showed variable phytochemical groups. The shade dried leaf powder was subjected to proximate and elemental analysis. Different extractions of Eichhornia crassipes L. using ethanol, methanol, hexane, ethyl acetate and chloroform were done and also qualitative, proximate composition and quantitative were performed. Eichhornia crassipes L. showed high level of total ash (7.90w/w) water soluble ash (6.40w/w), acid soluble ash (1.11w/w) and loss of drying (0.735w/w). The extractive value of Eichhornia crassipes L. was found high in methanol (8.64%) followed by ethanol (8.07%), chloroform (7.41%), ethyl acetate (6.91%) and hexane (1.45%). From the preliminary phytochemical analysis we found that the secondary metabolites such as flavanoids, steroid, sugar, alkaloids, quinine, phenolics, saponins and coumarin were present. Finally, the quantitative estimation of this plant have total alkaloids contents (TAC) 16.75 μg, total flavanoids contents (TFC) 15 μg and total phenolics contents (TPC) 20.5 μg were obtained. The quantitative determination of Eichhornia crassipes L. has revealed the presence of high phenolics content among all the other phytocompounds. The methanolic extract of Eichhornia crassipes L. plant contains pharmacological properties and they can be explored for biological potentials.