Babies always rub their eyes in their sleep is related to dust entry, allergic conjunctivitis and sleepiness. If the baby goes to an environment with dust or powder before going to bed, it will cause these substances to enter the baby’s eyes and cause eye discomfort, so they will often rub their eyes with their hands after going to bed. If you do not pay attention to eye hygiene or allergic conjunctivitis, the eye area will be itchy, and the baby will often use his hands to rub, do not pay attention to eye hygiene will also lead to dryness in the eye area, so it will also cause discomfort in the eye area. Sometimes the baby is too sleepy to sleep, but the surrounding environment is noisy so that the baby can not sleep, but also involuntarily to rub the eyes. Foreign objects inside the eyes will cause eye discomfort, so it is also easy to have this situation.