The thick white tongue is considered poor oral hygiene, or poor digestion may be greater, so it is important to eat lighter foods, such as more vegetables and fruits, green vegetables, cabbage, celery, winter melon, apples, oranges, watermelon, etc., as well as all kinds of light porridge can be. Like particularly greasy food and spicy stimulating food are not allowed to eat. In addition, you should rinse your mouth in time after eating, brush your tongue gently when you brush your teeth, and if necessary, you can eat some probiotics to promote digestion.