Cupping out of the blisters, if smaller blisters do not need special treatment, blisters larger need, puncture discharge. 1. Smaller blisters: If the blisters are smaller, they will generally absorb on their own, pay attention to hygiene, more observation, do not need special treatment. 2. Larger blisters: If the blisters are larger with more exudate, you can use povidone-iodine to routinely disinfect the blisters and the surrounding skin, and then puncture the bottom of the blisters with a sterile needle to discharge the exudate, and then disinfect it again with povidone-iodine, wrap it with sterile gauze and change the medication on time, paying attention to hygiene and preventing infections. Cupping out of the blisters, if you need to puncture, you need to go to the hospital in time to check, have a professional doctor for puncture treatment.