There is a role for oral administration of MaiZhiLing tablets for swelling of severed finger reimplantation. Mai Zhi Ling Tablet is the extract of horse chestnut, which can reduce the permeability of blood vessels, increase venous return, reduce venous congestion, increase the elasticity of blood vessels, and can also be antioxidant and increase the tension of blood vessels. It has the effect of preventing and treating tissue edema and venous edema. After reimplantation of severed fingers, the local tissue edema will lead to swelling of the surrounding tissues, aggravating the effect on venous return and lymphatic return. As the artery and vein are re-anastomosed, the vascular tissues at the anastomosis end will also have edema, which will take some time to be repaired, and the finger will be swollen at this time. MaiZhiLing tablets have the above effects, can play a role in increasing venous return, reduce venous congestion, thereby reducing tissue edema, is useful in eliminating local swelling. In addition, localized swelling can also be reduced by elevating the affected limb, physiotherapy and so on. After the re-implantation of the severed finger, the follow-up treatment and rehabilitation exercise must be carried out strictly according to the doctor’s requirements, and do not take care of it by yourself, so as to avoid delaying the condition. Drugs need to be used under the guidance of the doctor.