Purple lower eyelids may be caused by subcutaneous bruising, eyelid hemangioma and other reasons. 1. Subcutaneous bruising: If the baby rubbed his eyes hard or suffered trauma to the eye, it may lead to rupture and bleeding of the subcutaneous blood vessels of the eyelid of the child, resulting in subcutaneous bruising of the eyelid and the formation of local bruises. In the early stage of the child, local cold compresses can be applied to the eyelids, and after 48 hours, hot compresses can be applied to the eyes to promote the absorption of bruises and alleviate the discomfort of the patient. 2. Eyelid hemangioma: If the baby has hemangioma in the subcutaneous tissue of eyelid due to developmental abnormality, it may lead to localized bruising of eyelid. Children with hemangiomas can be removed by laser treatment or other means to improve their appearance. It is recommended that patients with purple lower eyelids and other discomforts should seek prompt medical attention to assess their condition and choose the appropriate treatment under the guidance of a doctor.