As a high-nutrition unicellular microalgae, Chlamydomonas reinhardtii boasts broad prospects in the fields of nutrition, health care, and cosmetics. It is rich in high-quality protein, essential amino acids, Omega-3 fatty acids, vitamins, and minerals, and can be processed into high-efficiency dietary supplements to help enhance immunity and regulate metabolism. Additionally, algae-derived bioactive components (such as chlorophyll and carotenoids) possess antioxidant and anti-inflammatory properties, which can effectively clear free radicals, delay skin aging, and improve skin tone. Currently, Chlamydomonas reinhardtii has been applied in functional foods, oral beauty products, and skincare formulations. Relying on its natural and sustainable characteristics, it has become an emerging raw material in the green health industry, with significant market potential in the future.