According to the depth of the burn, the burns are divided into 3 degrees, i.e. degree I, degree II and degree III, and degree II is further divided into shallow degree II and deep degree II. If a burn blisters, it means that it is at least a shallow Ⅱ degree or more. Blister retention or treatment, 2 common situations are as follows: 1, blisters are small: soybean, mung bean size blisters are generally retained, no special treatment, keep the local dry, waiting for natural absorption. After the blister skin falls off, it will generally heal on its own after 1 week; 2. Larger blisters: It is recommended to drain the blisters low, make an incision at the low end of the blister fluid, or use a syringe to suction, squeeze out all the blister fluid, keep the blister skin temporarily, and put the blister skin on the surface of the wound to play the role of temporary coverage. Both to reduce pain, but also to alleviate the occurrence of infection, you can use gauze wrapping to wait for natural healing; 3, the blister skin off, the wound is still not healed: it is recommended that timely treatment to a professional burn center, otherwise the wound is easy to infection, deepening, delaying the healing of the wound, bringing unnecessary trouble. So whether the blister is picked through or retained, according to the actual situation of the patient to carry out appropriate treatment.