If the feet of the blisters for a long time without relief, the phenomenon of subsiding, there may be infected, the patient can go to the regular hospital under the operation of the doctor to use a sterile syringe to extract the blisters, improve the symptoms. At the same time, patients should pay attention to the sterilization of the affected area, follow the doctor’s instructions to take antibiotics, such as roxithromycin, cefixime, etc.; can also be used topically with erythromycin ointment, fusidic ointment, etc. for local treatment, to prevent aggravation of the condition, and so on. It is recommended that patients strictly follow the doctor’s instructions, actively cooperate with the doctor’s treatment, pay attention to the care of the affected area in life, to avoid the trauma of water, but also should observe the affected area, once there is severe pain, redness and swelling, etc., should be timely medical treatment.