After tooth extraction, there will be edema and pain at the wound, usually should not eat within 2 hours, after 2 hours can be warm and cool liquid diet, should not eat too hot, too hard or spicy food, because these foods will have adverse effects on the wound healing. 2~3 days later, you can gradually resume normal diet, but should reduce the extraction side of the chewing food. Ice cream can reduce the chewing action when it is softened in the mouth, and ice cream is a cool food, which can make the blood vessels at the extraction site contract, reduce local edema and bleeding, and also relieve pain symptoms, which has an auxiliary effect on the healing of the wound. Therefore, eating ice cream after tooth extraction meets the dietary requirements and can be consumed appropriately. Dietary adjustments should be made under the guidance of the doctor after tooth extraction and attention should be paid to keeping the mouth clean to promote wound healing.