Spirulina are multicellular and threadlike blue-green algae. In this review we have studied about the essential nutrient and medicinal properties of spirulina such as antioxidant, antiviral, antifungal, and etc. Spirulina has certain methods of preparation and original morphology under certain conditions. It is used as various disorders. Here we have summarized the available information concerning the human clinical potential and uses of spirulina and also taxonomy. Spirulina are mainly due to chemical composition is consists of protein, amino acids, carbohydrates, fatty acids, vitamins, pigments further studied that cultivation, production another different essential source's. The review provides important information on productivity and also cultivation of spirulina. Cultivation and creative formulation are further necessary to conventional products with based on protein system. This review is an hard work to collect these nutritional and medicinal functions, uses, methods of preparation, Cultivation, morphology of spirulina in an vast information the literature on spirulina.