There are generally no absolute contraindications for 3 days after tooth extraction, but you should not eat too spicy, too hard food; you should not drink alcohol, smoking; you should not lick the wound and so on. Specific as follows: 1. too spicy, too hard food: after tooth extraction, there is a wound in the mouth, too spicy food will stimulate the mouth, too hard food will be chewed, so that the scar formed by the wound cracked, not conducive to the recovery of the wound. 2. Smoking, drinking alcohol: cigarettes and alcohol are harmful to the wound after tooth extraction, not conducive to tissue repair, but will stimulate, and may lead to infection. 3. Licking the wound: don’t lick the wound with your tongue after tooth extraction, the human body will form its own blood clot after having a wound, and a good blood clot is an important condition for the normal healing of the tooth extraction wound and avoiding infection. If you lick the wound frequently, the blood clot will be dislodged and the wound will bleed more than once. After tooth extraction, if there is a bad smell, increased pain, obvious swelling, bleeding, etc., then you should seek medical attention as soon as possible to avoid delay.