The hazards of newborn babies’ urination and feces are mainly due to the impact on bone development and the delay in establishing urinary reflexes. For newborns, it is generally not recommended to put feces and urine, because the newborn spine and hip joints are not mature, if the feces and urine will easily lead to spinal and hip injuries, especially when the feces and urine too long, it is more likely to lead to injury. In addition, due to the newborn’s urinary reflex is not fully established bladder storage function is not perfect, if the feces and urine, may lead to the newborn’s urinary reflex delayed establishment. Generally for infants under one year of age are not recommended to put feces and urine, as far as possible to be able to use diapers or diapers, and change frequently.