Sudden hardening and swelling of one side of the nose can be analyzed in two ways, as follows: 1, local pain, redness and swelling of the skin, if there is pain and redness and swelling of the skin, local inflammation, such as nasal boils, a common clinical disease, the appearance of nasal boils, it is recommended that patients refrain from extruding the local antibiotics can be given to the application of antibiotics, if the boils continue to increase in size, swelling and pain continue to worsen, it is recommended that the patient go to the hospital as soon as possible; 2, If one side of the nose becomes hard and swollen without pain, and there is no redness or swelling of the skin, it is considered that the local area may be a benign tumor, such as sebaceous cysts, and local medication may not be effective, so it is recommended that the patient go to the hospital, and surgical resection is often given, and the chance of recurrence after resection is relatively small, and the therapeutic effect is very satisfactory.