After the stitches most wounds do not need to be changed every day, if it is a neat incision after surgery, or wound debridement suture oozing blood, exudate is not much, and there is no infection, contamination is very serious, usually is two days or three days to change the medicine, until after the removal of the stitches wound without changing the dressing. But if the contamination is more serious at the time of the injury, the potential for infection, or after the suture wound oozing blood, oozing more cases, in the appearance has seen a dressing wet, it is necessary to change the medication every day. If the wound does not appear to be infected and no wetness is seen on the exterior, it is also okay to change the medication once every two days.