Children with hoarfrost on their tongues are characterized by thick white moss, which may be due to food accumulation (accumulation of food in the stomach due to indigestion) and phlegm accumulation. According to the theory of tongue diagnosis in Chinese medicine, a normal person’s tongue coating is thin white moss, while white cream is thick white moss, which is an abnormal tongue coating. Thick white moss suggests that the child may have food accumulation and phlegm stagnation problems, which need to be eliminated by eliminating food stagnation (digesting stagnant food) and resolving phlegm and expelling dampness. Children with food stagnation often experience over-eating and may have symptoms such as bloating, bad breath and constipation, which can be eliminated by choosing Shenqu, Maiba and Shanzha. Children with phlegm stagnation may have symptoms such as dullness (lack of appetite and reduced food intake), drowsiness, and loose stools, etc. Poria, Cangzhu, etc. can be chosen to resolve phlegm and dispel dampness. Children with white cream on the tongue are advised to go to the hospital and not to buy the above medicines on their own.