Astigmatism in a child’s eye is the inability of parallel rays of light to form a focal point after passing through the refractive system of that eye, causing a loss of vision in the child. Astigmatism is a type of refractive error, which mainly refers to the inability of parallel light rays to form a focal point after passing through the refractive system of the eye due to the different refractive power of the eye at different meridians. Astigmatism can be caused by congenital factors such as corneal dysplasia, or by acquired factors such as long-term poor eye posture. Astigmatism is mainly characterized by decreased visual acuity and easy-to-use eyestrain. It is characterized by eye swelling and pain, tearing, and unstable vision. Generally speaking, astigmatism can be improved by wearing frame astigmatism glasses and laser surgery and other methods of treatment. Pay attention to eye hygiene in normal times. If there is any discomfort, it is recommended to consult a doctor in time for diagnosis and treatment.