The fastest way of drug absorption is generally intravenous injection, through the intravenous injection of drugs can directly enter the blood circulation system, and drug concentration in the metabolic process will not be depleted, the effect of the drug can be fully applied, with the blood circulation to reach the role of the organ or local lesions, can play a stronger therapeutic effect. In addition to intravenous injection, local inflammation or ulcers, can be directly applied to wounds or lesions through localized medication for targeted treatment, so that the drug is quickly absorbed to exert its effect as soon as possible, relieving local symptoms in a timely manner, and the therapeutic effect is also more satisfactory. Due to the different causes of the disease, the pathogenesis is also different, and some of the drug preparations for the way of drug delivery is also different, so in the treatment should be based on the guidance of a professional doctor, combined with the individual situation of targeted treatment, to maximize the therapeutic effect, timely alleviation of the condition, to avoid causing adverse effects.