The effect of flu infusion is not better than oral or intramuscular medication. Although people feel more comfortable after a cold infusion, it only replenishes the body’s fluids and increases the body’s essential water, energy, glucose and vitamins through the infusion. Infusion is not advocated for colds, but the drugs taken orally or by intramuscular injection can still make the drugs enter the body and can be effective. Especially for the common cold, we do not advocate infusion treatment, we only need to drink warm water, warm juice, appropriate bed rest, the common cold can be cured within a week. The infusion of flu can increase some risks, such as causing infusion reactions; and the repeated and frequent stimulation of the blood vessel walls by the input of fluids in the blood vessels can easily cause damage to the blood vessels, so the infusion of flu can do more harm than good.