The best time to treat astigmatism in children is before the age of 6, and the earlier the treatment, the better the results. Astigmatism is a type of refractive error of the eye that is primarily related to the curvature of the cornea. Parallel light rays that enter the eye of a person with astigmatism cannot be focused, resulting in blurred vision. Children with astigmatism can improve their vision by wearing glasses. The earlier the timing of treatment, the better the prognosis. Children are at a critical stage of vision development, and if astigmatism is not corrected in a timely and effective manner, it will affect their vision development and lead to amblyopia. Generally, treatment of astigmatism in children before the age of 6 is more effective, but after the age of 6, it is much more difficult to treat. Therefore, parents should promptly take their children to the ophthalmology department of a regular hospital for a dilated eye exam and improve their vision by wearing corrective glasses after a clear diagnosis, so as not to affect the visual development of children.