Red ginseng has an exciting effect on nervous system, and the therapeutic dose can accelerate impulse conduction and increase the intensity of conditioned reflex. Adults taking ginseng root powder, taking more than 0.3g every day and taking it continuously, may have toxic reactions such as insomnia, depression and weight loss. When taken in large doses, blood sugar is significantly reduced and myocardial contractility is inhibited, similar to cardiac glycoside. Can lead to blood pressure drop, respiratory paralysis, skeletal muscle paralysis and so on. Therefore, taking ginseng should master the principle of medication, use drugs based on syndrome differentiation, and avoid blind abuse.