If you have blisters on your lips due to excessive internal heat, here are some ways to quickly eliminate them. Keep the lips clean and avoid picking at the blisters. Apply a cold compress to reduce swelling. Use lip balm or ointment with soothing ingredients like aloe vera. Drink plenty of water to stay hydrated and help reduce internal heat. Avoid spicy, greasy, and irritating foods. You can also take some Chinese herbal medicines or foods with heat-clearing effects under the guidance of a doctor. If the blisters are severe or don't improve, consult a doctor for proper treatment.