Some parents of children with optic neuritis often do not think: since it is an “inflammatory” disease, it is better to eliminate the inflammation? It’s not that simple. Optic neuritis is also a common blinding eye disease. The causes of optic neuritis include: 1) viral infections; 2) local infections, such as sinusitis and dental caries. Optic neuritis in children is sensitive to corticosteroid medication, and early and adequate application is not only beneficial for disease control, but also reduces the possibility of recurrence. At the same time, etiologic treatment is required; early inflammatory response should be controlled to avoid optic nerve fiber involvement. Vasodilators and neurotrophic support are also given. If infection is present, antibiotics or antiviral drugs are used. The disease can recur, and long-term neurological and ophthalmologic follow-up is required after cure, with attention to prevent the development of multiple sclerosis. On the other hand, color vision abnormalities and relative pupillary afferent disorder (RAPD) are permanent, even if the child’s vision has been “restored”.