Abstract: In order to evaluate the nutritive value of Grateloupia livida and improve its comprehensive utilization rate, we determined the composition of the basic nutrients, amino acids, fatty acids and minerals of G. livida. The results show that the mass fractions of crude protein, crude fat, ash and crude fiber were 12.28%, 0.18%, 13.32% and 1.80%, respectively. Seventeen kinds of amino acids were found which contained eight kinds of essential amino acids, and the limiting amino acid was tryptophan. G. livida contains 15 kinds of fatty acids, such as linoleic acid, arachidonic acid, eicosapentaenoic acid and docosahexaenoic acid which have important physiological functions. The results indicate that G. livida is nutritive and rich in Mg, Ca, Fe, Zn and Cu.