Drainage tube wounds can be basically healed 1-2 days after drainage tube removal, and if complications such as infection occur, the healing time is extended accordingly. In addition, the time of drain placement is also related to the wound healing time after drain removal. If the drain is placed for more than 7 days, the healing time after removal is extended by 4-5 days or even 1 month. Wounds with drainage tubes placed are generally small and can form sinus tracts after removal. If the wounds do not show other lesions, they can heal after 1-2 days, and healing time is slightly delayed in elderly patients. In some patients, due to incomplete drainage of pus, resulting in wound infection and inflammatory secretions, the prognosis of the wound will be delayed. Local disinfection and dressing are required, and if necessary, the wound site should be filled and drained, and appropriate anti-inflammatory treatment or even oral antibiotics should be administered to promote anti-inflammation of the wound site. After the infection is controlled, it can heal in about 1-2 weeks. During the treatment of the wound, attention should be paid to balanced nutrition, a light diet, high protein and vitamin-rich foods, as well as monitoring changes in laboratory indicators, maintaining local hygiene and dryness, and preventing infection.