Astaxanthin, or zooxanthin, astaxanthin, belongs to a kind of carotenoids, is a strong natural antioxidant. Astaxanthin is widely found in shrimp, crab, salmon and plant leaves, flowers, fruits, marine crustaceans and fish contain astaxanthin. Has a strong antioxidant capacity, can effectively remove sulfide, disulfide, nitrogen dioxide, etc., can also play a role in reducing lipid peroxidation, effective inhibition of free radicals caused by lipid peroxidation. In addition, astaxanthin also has a certain inhibition of tumor cell reproduction, regulating immune cell activity, clearing the body of free radicals and other effects, but because of its limited effect, it is not widely used in the field of drugs. Mainly widely used in the field of health care products, food additives and so on. We have to look at astaxanthin correctly, if the body is not feeling well, or to seek medical help.