The medication is usually changed every 2 to 3 days after the stitches, or daily if necessary, or even several times a day. The main purpose of changing the medication is to keep the wound clean and to avoid bacterial infection that may cause delayed healing. The frequency of dressing changes depends on the size and depth of the wound, the recovery status and the location of the injury. If the wound is not very serious, and the wound is recovering well, and there is no infection or inflammation, you can change the dressing once every two to three days, mainly to clean the wound and change the dressing. If the wound is infected or has more oozing or bleeding, you need to increase the frequency of dressing changes, such as once a day or once every half a day. When changing the dressing, it is important to observe the concept of aseptic operation and to have professional personnel to operate.