It is good to discharge the residue after foot debridement because the residue inside the wound cannot be discharged, which can lead to infection, sinus formation, hard lump formation, etc. inside the wound. 1. Infection: after foot debridement, if the residue can not be discharged, first of all, it can lead to infection inside the wound; redness, swelling, heat and pain in the wound, and even the formation of abscesses. 2. Sinus formation: for the wound internal foreign body, can stimulate the wound internal tissue long-term inflammatory reaction, there are repeated episodes of exudate outflow, over time will form a sinus tract. 3. Formation of hard lumps: part of the residue can be gradually wrapped by their own tissues, fibrosis, the formation of a hard lump, pressure can be painful. To summarize, foot debridement after the discharge of the residue is good, if you feel uncomfortable in time to seek medical advice, consult a physician’s guidance.