One and a half year old baby tongue black, there are several reasons: 1, eat food containing melanin, such as grapes, chocolate, black sesame paste, etc., you can use the baby special cleaning tongue toothbrush, gently brush. 2, long-term application of antibiotics caused by dysbiosis of the formation of black tongue, stop using antibiotics, you can also give the child to eat some probiotics to regulate the flora. 3, fire, the child in addition to the tongue black, also accompanied by If your child has a dry tongue with red, cracked tongue and dry stool, you can give your child some cool food, such as cabbage, eggplant, white radish, bean sprouts, cucumber, watermelon, pear, grapefruit, etc. to improve. 4, cold dampness, in addition to a black tongue, children also have a smooth tongue and loose stool, indicating that the child’s body is heavy with cold dampness, you can eat some warm food, such as leek, pumpkin, yam, etc. to improve.