Canker sores can be treated by general treatment, physical therapy and medication when they are not suppurated. 1. General treatment: when the carbuncle is not suppurated, avoid squeezing to prevent the inflammation from spreading, the patient should develop good habits in daily life, avoid spicy and stimulating food, pay attention to rest, pay attention to wound cleaning. 2. Physical therapy: short-wave ultraviolet light can be used to prevent the spread of inflammation when the carbuncle is not suppurated, so that the phagocytosis of white blood cells can be improved, thus playing a therapeutic effect. 3. medication: carbuncle is caused by acute deep infection with multiple adjacent hair follicles, it is recommended to apply medication under the guidance of a doctor, such as erythromycin ointment, ichthyolite ointment, mupirocin ointment, etc., these medications can play a role in carbuncle without pus, anti-bacterial, anti-inflammatory, antipruritic and so on. It is recommended that patients should go to the hospital for examination in time when they are not feeling well, so as to clarify the cause and then deal with it accordingly.