The patient’s tailbone is swollen, and the common clinical causes are mainly the following: a. The patient accidentally falls and injures the soft tissues of the sacrococcygeal area, which can cause local hematoma formation and cause obvious swelling and pain. At this time, it is often accompanied by restricted activity and elevated skin temperature. Local ice can be applied to promote capillary constriction and reduce tissue exudation, and later hot amylin packs can be applied externally and oral bruising pills and other drugs can promote the self-absorption of hematoma and reduce local swelling and pain symptoms. Second, the tailbone can cause local pore blockage due to prolonged sitting, accompanied by sebaceous gland cyst formation and infection, thus causing obvious swelling and pain. Patients need to apply topical Ruyi Jinhuang cream and energizing iodine gauze to promote the local inflammation to subside, and patients with abscess formation need to perform abscess incision and drainage to remove the necrotic tissue in the sebaceous glands. After the inflammation is controlled, most patients need to undergo a second surgery to remove the sebaceous cyst completely, which can achieve better treatment results.