If the baby’s urine smells, mainly consider the following conditions: 1, due to children suffering from diabetes caused by the symptoms, after children suffering from diabetes is not timely application of hypoglycemic drugs for control, will often appear ketoacidosis, this time children’s urine will have the smell of rotten apples. 2, children suffering from phenylketonuria, children suffering from phenylketonuria will often appear after the urine is rat turd smell, urine smell is very obvious, fishy smell is more obvious. This is the case when the child’s body is heavy with dampness and heat, and the urine is very yellow in color.