Redness and swelling after anal surgery can be used with erythromycin ointment, which can play an anti-inflammatory role. After anal surgery, the wound is usually open without suture, and the wound needs to be regularly changed and cleaned and sterilized after surgery. If there is redness and swelling after anal surgery, suggesting that there is inflammation, may be due to improper care, or not timely change of medication caused by minor redness and swelling can be local erythromycin ointment coated anti-inflammatory, if necessary, under the guidance of the doctor with oral amoxicillin capsules or metronidazole and other medications, trauma also need to change the medication in a timely manner. If the erythromycin ointment is not significantly improved, or continue to aggravate, you need to go to the hospital in a timely manner, review the wound condition, to avoid delayed diagnosis. After anal surgery, you need to eat a reasonably regular and light diet, avoid spicy stimulation, greasy food, and keep the bowel movement smooth, so as not to affect the healing of the wound. If there is redness and swelling after anal surgery, you need to go to the hospital in time, to clarify the cause of the disease, and follow the doctor’s instructions to give reasonable medication and treatment.