Swollen eyebrow is mainly caused by trauma and tissue fluid exudation and bruising resulting in swelling, you can first cold compress, then hot compress, with medication to reduce swelling. 1. Cold compress: Within 24 hours after the swelling of the eye brow, you should apply cold compress locally, prepare clean towel wrapped with ice and put it on the swollen position to promote vasoconstriction and reduce the exudation of tissue fluid, which will help to reduce the swelling. 2. Hot compresses: After 24 hours, you can turn to local hot compresses, which can promote blood circulation and the absorption of tissue fluid and bruises, and better reduce swelling. 3. Drugs to reduce swelling: swollen eyebrow, you can also use local erythromycin ointment, with oral blood circulation and blood stasis drugs such as panax ginseng tablets, can help reduce swelling. If your eye brows are swollen, go to the hospital in time for a detailed examination, and be guided by the doctor to use medication.