The dangers of myopia in children include loss of distance vision, susceptibility to visual fatigue, and blinding complications. Nearsightedness will lead to a decrease in children’s distance vision, which will affect their daily life and learning, such as blurring of vision when looking at the blackboard in class, leading to a decrease in their grades, and so on. Because myopia can lead to over-adjustment of the eyes, children are more prone to symptoms of visual fatigue such as eye swelling, soreness and foreign body sensation. If myopia develops into high myopia, the wall of the eyeball may become thinner as the eye axis continues to grow, resulting in blinding complications such as choroidal atrophy, choroidal neovascularization, or retinal detachment. Myopic patients may also develop other eye diseases such as strabismus, glaucoma, cataracts, etc., which may damage their vision. It is recommended that children with myopia seek prompt medical attention to evaluate their condition and follow the doctor’s instructions.