If the surface is black, you can try to wipe it gently with sandpaper to remove the black surface, and then apply wood wax with the same color as the floor to repair it. If the blackened area is not large, you can burn the surface lightly with a soldering iron or alcohol lamp to restore the original color of the floor.
If it is black inside, the damaged board needs to be replaced. Remind everyone that replacing the damaged floor requires professional technicians, so don't operate it easily to avoid more problems.
Pay attention to fire prevention when using it at ordinary times. Conduct fire safety education at home, regularly check whether there are hidden dangers in home appliances, and regularly clean the floor. Never put cigarette butts, lighters and other items that are easy to cause fire directly on the floor.
In short, the blackened floor can be repaired by certain methods and measures, but fire prevention is the most important at ordinary times.