Blisters can be seen in a variety of clinical diseases such as herpetic pemphigoid, burns, etc. The skin of the blisters should not be torn off as much as possible, and it can play a role in protecting the wound. The outer skin of the blister mainly plays a protective role, it serves as a biological dressing, can protect the inner skin from fungi, bacteria, dust and other infections, reduce the risk of infection, but also reduce local pain, help wound healing. If the blister skin is removed, the wound will come into direct contact with the outside world, which will not only easily lead to bacterial infection, but also aggravate the pain after rubbing with clothes, which is not conducive to the healing of the wound. Therefore, it is not recommended to tear off the blister skin, keep the blister area skin clean, nutritional diet to promote the recovery of the wound. If there is any discomfort in the blister area, you should go to the hospital in time.