Iodoform gauze is one of the commonly used clinical excipients, which is often used for dressing change and drainage of infected wounds. The main functions of iodoform gauze are as follows: First, it can play the role of killing and inhibiting the growth of bacteria in the incision, and prevent the progressive aggravation of incision infection. Second, iodoform gauze has a strong adsorption and drainage effect on the large amount of exudate in the wound, which can maintain a proper moist environment in the wound and is more conducive to the growth of granulation tissue in the wound. Third, iodoform gauze can promote the self-absorption of decayed tissue in the incision and stimulate the proliferation of new granulation tissue. Fourth, iodoform gauze contains ether and other components, which can play a mild anesthetic effect on local tissues through the local filling and drainage in the incision and significantly reduce the painful symptoms of patients when changing medication.