Redness and swelling on the sixth day of skin cyst surgery, consider that there is infection in the operation area, need to change the medicine on time and use antibiotic treatment. 1. Change the medicine on time: skin cyst surgery is a routine minor surgery, due to surgical stimulation will cause trauma to the local skin soft tissue, may cause physiological congestion, swelling, pain and other manifestations. Consider infection after the appearance of redness and swelling, usually with iodine routine disinfection, with sterile gauze bandage, change the medicine on time, remove the stitches. 2. Antibiotic treatment: If the area of redness and swelling expands, accompanied by pain, oozing and other inflammatory manifestations, you should use topical erythromycin ointment, mupirocin ointment and other antibiotics for treatment, and take amoxicillin, cefaclor and other antibiotics for treatment, if the infection is serious, you can use cefuroxime, levofloxacin and other antibiotics intravenously for treatment. Redness and swelling of skin cysts on the sixth six days after surgery, it is recommended to go to the hospital in time for examination and treatment as prescribed by the doctor.