Blisters i.e. blisters. A big blister on the finger, consider and burn blisters, friction blisters, herpes simplex and other factors related to the choice of general treatment, drug treatment and other methods. 1. Scald blisters: some people may be accidentally burned by fire or hot water, thus appearing on the finger with a large blisters phenomenon, at this time should be to avoid blisters rupture, and do a good job in the treatment of anti-infections, can be with the doctor orally amoxicillin, cephalosporin and other antibacterial drugs. 2. Friction blisters: because of long-term labor with the same part, may cause finger blisters, at this time you can go to the hospital, by the doctor using a sterile syringe will be suction blisters, and then disinfected with povidone-iodine bandage, to avoid infection. 3. Herpes simplex: a large blister on the finger may also be due to herpes simplex virus infection, so in the treatment can be given antiviral therapy, commonly used drugs include acyclovir, penciclovir and so on. All of the above medications should be used under the guidance of a doctor, avoid self-medication to avoid adverse effects. It is recommended that the patient go to the hospital to find out the cause of the disease and follow the doctor’s instructions to standardize the treatment.