The hazards of children sleeping with the night light on may affect growth and development, affect the quality of sleep and so on. 1. affect the quality of sleep: in the middle of the night if you sleep with the light on, can lead to the baby sleep sleep does not happen, easy to rest, affecting the next day’s learning and life. 2. Impact on growth and development: the human body secretes growth hormone to promote children’s growth, is in the child’s night children in a deep sleep state secretion, turn on the night light to sleep the child sleep is not solid, affecting the state of entering a deep sleep, so it will affect the secretion of growth hormone, resulting in the growth of children’s development slows down, the most obvious is that the child does not grow taller. Parents are advised not to give their children night lights to sleep, and should ensure that the sleeping environment is at the right temperature and the right brightness, so as not to cause the emergence of the above discomfort symptoms, affecting the normal growth and development of children.