If the patient’s arm is edematous during the infusion and it is still serious, the following methods can be taken to relieve it: firstly, the infusion in this arm needs to be stopped immediately to avoid the fluid from entering the arm again. Second, you need to change an arm for infusion, you can change the method of superficial vein or deep vein. Third, you can apply appropriate hot compresses to the swollen area, and the swelling can be reduced in two days, if the infusion is chemotherapy drugs, you can not apply hot compresses. Fourth, you can elevate the swollen arm to promote blood circulation, which can play an obvious relief effect. In the infusion must pay more attention, once there is edema should be stopped in a timely manner, if the swelling is particularly serious, you should promptly see a doctor for treatment.