Glutathione is an antioxidant that has the function of improving the antioxidant function of organisms, promoting growth, and improving the resistance of organisms to adverse environmental effects. As an antioxidant, it helps the organism to scavenge free radicals and peroxides so as to maintain the relative stability of the organism. It is also a good detoxifier, which can diminish the toxicity of toxic substances and remove the effect of toxic substances in the body. It can directly bind to some heavy metal ions, carcinogenic substances, aflatoxin and other toxic substances, and then after binding, it is excreted out of the body under the action of enzymes, which is an important substance with a very broad-spectrum detoxification effect. It is also found that glutathione has growth-promoting effects and can improve the resistance of organisms to adverse environments.