Rectal cancer artificial stoma bag can usually be changed once a week, if there is leakage of the artificial stoma bag needs to be replaced in time. Rectal cancer surgery usually chooses colostomy for single-lumen stoma and double-lumen stoma, or permanent stoma and temporary stoma. The stoma is connected to an artificial fistula bag, which requires attention to daily care after surgery. In general, if the artificial fistula bag is not leaking, it can be used continuously, but it needs to be changed once a week to minimize the occurrence of dermatitis and other conditions. If the artificial fistula bag leaks, it needs to be replaced in time, because the leaking stool can easily cause allergic dermatitis, fecal dermatitis or infection of the skin around the stoma. Therefore, the skin around the stoma should be thoroughly cleaned when replacing the bag, and zinc oxide ointment should be applied to avoid dermatitis in fecal-soaked skin. In addition, it is important to change the bag frequently, clean the skin around the stoma regularly and keep it dry. When peristomal skin problems occur, they should be treated as soon as possible.