When a child sleeps at night with itchy eyes, it may be caused by foreign bodies in the eyes, allergic conjunctivitis and impingement. 1. Foreign body in the eye: If a foreign body enters the eye, it will irritate the eye, resulting in tearing and itching. It is recommended that patients go to the hospital for examination and timely removal of foreign bodies to relieve eye discomfort. 2. Allergic conjunctivitis: generally caused by contact with allergens, mainly manifested in redness, swelling, itching and other symptoms. 3. Inverted eyelashes: As the eyelashes of inverted eyelashes grow upside down, the eyelashes stick to the surface of the cornea of the eyeball. This causes symptoms such as itching and tearing of the baby’s eyes. Children sleep at night itchy eyes, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.