Astigmatism refers to refractive error of the eye, often presenting symptoms such as reduced vision, blurred vision, and easy eye fatigue. 3 years old to enter kindergarten physical examination found astigmatism of the eyes, parents are advised to promptly take their children to the hospital ophthalmology, optometry examination, to clarify the specific degree of astigmatism, and under the guidance of doctors to take the appropriate treatment. Common causes and treatment are as follows: I. Causes: 1. congenital genetic factors: if the parents have astigmatism, it may be inherited; there is also the child’s corneal congenital irregular development may also lead to this condition; 2. corneal diseases: common corneal diseases such as keratitis, corneal ulcers and perforations may cause varying degrees of corneal scarring, resulting in irregular corneal morphology, which in turn causes astigmatism; 3. bad habits. Improper eye use and lack of outdoor activities, such as squinting frequently and lying down to read, may lead to the formation of astigmatism. Treatment: 1. Mild astigmatism: Mild astigmatism usually does not affect vision and can be treated without special treatment, such as avoiding electronic products and books in dark places, having more than 30 minutes of outdoor exercise daily, paying attention to sitting posture and eye distance, etc.; 2. Medium to high astigmatism: Medium to high astigmatism may cause amblyopia and requires treatment. Treatment methods include glasses and surgery, etc. As children are young, they can wear frame glasses for corrective treatment under the guidance of a doctor, and as adults, they can choose surgical treatment, such as excimer laser refractive keratomileusis and refractive lens replacement, according to their physical condition. In addition, children with astigmatism should pay attention to healthy eye use and eye hygiene in daily life. A balanced diet with no partiality and a diet containing vitamin A and vitamin C, such as carrots and spinach, are good for the eyes. Regular review of visual acuity and timely adjustment of treatment plan will help in vision correction.