Nasal boils are caused by Staphylococcus aureus infections, mostly due to nasal hair plucking, and some of them are more likely to occur due to underlying diseases such as diabetes. Therefore, it is necessary to actively treat nasal boils, usually with intravenous penicillin and metronidazole for one week, and local iodophor, etc. At the same time, it is necessary to observe the patient’s condition, and if there is fever, blood culture and drug sensitivity test should be performed to select a sensitive antibiotic for treatment.