Thick tongue coating in babies generally suggests heavy dampness. If the tongue is white, greasy and thick. This situation belongs to the very heavy dampness. You can let the baby drink a little patchouli Zhengqi water, or eat a little bit of Chenpi bubble water to drink, you can also add azuki beans ground into a powder, Poria ground into a powder, water to drink, these can go to the dampness. If the tongue is thick, and more yellow, this time in addition to dampness and heat, dampness and heat is more heavy, this time you can give the baby to drink honeysuckle and poria, together with the water to drink, both can clear heat, but also can benefit the dampness, clearing heat and dampness.