Abstract: The proximate composition (Protein, Carbohydrate and lipid), fatty acids, amino acids and minerals contents were investigated in P. vigil. The aim of this study was to demonstrate the nutritive value of P. vigil crab. The protein, carbohydrate and lipid contents were found (19.5, 1.57 and 1.38%), respectively. Totally 18 amino acids was found, among 10 essential amino acids 9 were recorded and non essential amino acids 9 was reported. The essential and non essential amino acid were totally contributed (8.93 and 10.393 g/100 g), respectively. Fatty acids were analyzed, saturated fatty acids (palmitic acid 0.8141% and stearic acid 0.297%), monounsaturated fatty acid (oleic acid 0.9912%) and polyunsaturated fatty acid (Linoleic acid 1.112% and alpha-linoleic acid 0.7065%) was recorded. Finally, 9 minerals were analyzed (Ca> P> I> Na> K> Cu> Mn> Zn) among these calcium was maximum (15.67 mg g-1) and manganese was minimum (0.2121 mg g-1). The results showed that P. vigil crab is a nutritious food.