If a blister develops after a burn, it may not need to be punctured if the blister is small. If the blister is large or affects daily work and life, it can be punctured, but do not treat it by yourself and need regular treatment from dermatology. After the occurrence of burns, if blisters appear, they belong to degree II burns, because after local skin burns, plasma extravasation accumulates under the epidermis, thus forming blisters. If the blister is less than 1cm in diameter, there is no need to specifically puncture the blister, and you can apply scald cream and let it absorb on its own. However, if the blister is larger than 1cm in diameter and the tension is relatively high, the blister needs to be punctured with a sterile needle under strict disinfection, followed by applying scald cream and covering the wound with gauze to protect the wound surface with appropriate looseness, changing the medication regularly, and observing the wound healing. If the condition does not improve or gradually worsens after two or three days of medication, prompt hospital treatment is required. During the treatment period, patients should keep the wound dry and clean, avoid water to prevent infection, and do not eat spicy and irritating foods, such as chili and pepper.