If the lip is broken and swollen, you should first use ice or ice packs for cold compresses to reduce the further expansion of edema, while local pressure should be applied to reduce further bleeding. If the wound is superficial, it can be relieved by pressure and treatment, and the wound can heal itself after the blood stops and the swelling slowly subsides. If the wound is deeper and larger, you need to go to the stomatology department for debridement and suturing, mostly with absorbable sutures, and after suturing, you need to take oral antibiotics to avoid infection of the wound. Absorbable sutures generally do not need to be removed after suturing, until after healing, the knot will fall off on its own.