Patients pinch to particles in the armpit, in general, the common reasons are mainly the following cases: a. Obese patients can be in the bilateral axilla with more fat tissue accumulation, the formation of small fat particles, at this time, fat particles generally do not cause local infection and pain, the patient can take the method of close observation. If the volume of fat particles gradually increases during the observation process, surgical removal can be considered to avoid the symptoms of swelling and pain. Second, sebaceous cysts with infection, the underarm is more dense and rich sweat glands, once accompanied by pore blockage, can cause local sebaceous cysts with infection, the patient can feel the granule-like changes. For patients with obvious pain, topical application of Furtalin ointment and Ruyi Jinhuang cream can be used to promote inflammation absorption and reduce pain. If the inflammation of sebaceous cysts is completely controlled, patients are advised to undergo surgical removal of sebaceous cysts as soon as possible to avoid recurrent local infections.