The skin on the hand is broken and exposed flesh should be treated through routine disinfection and debridement, medication, strengthen skin care measures. 1. Routine disinfection and debridement: first of all, use flowing water or saline to rinse the broken skin and exposed flesh, clean up the secretion in time, if there is rotting flesh and broken skin, it should also be cleaned up in time, if the wound is deeper, it should also be bandaged after the wound is sutured. 2. Medication: If the wound is deep, tetanus antitoxin should be injected to prevent the infection of tetanus bacillus. 3. Enhance skin care: keep the wound and the surrounding skin clean and hygienic, avoid contact with the polluted environment, avoid contact with water, and change the medicine on time to prevent infection. If the skin on your hand is broken and exposed, you should consult a doctor in time to clean the wound and follow the doctor’s instructions.