There is no special harm to newborns from poultices. Because most of the poultices are processed and synthesized from Chinese medicine, the commonly used Chinese medicine belongs to the pungent and aromatic drugs, and some belong to the blood circulation and blood stasis drugs, the safety of these drugs are relatively good, especially for adults rheumatism, joint pain, etc. more commonly used. And the volatilization of the smell is inhaled by the child into the lungs and thus re-enter the body, such amount is very tiny and negligible. Therefore, if the newborn is not allergic to Chinese herbal plasters, the smell of the plaster is not particularly damaging to the child and parents need not worry too much. In addition, if parents are really unsure, they can give the child a liver and kidney function test, if the child’s liver and kidney function is normal, parents are more likely to rest assured.