Children’s amblyopia is basically the child can not see clearly. The causes of amblyopia are as follows: 1. Refractive amblyopia: the child has myopia, hyperopia or astigmatism and cannot make a clear image on the retina, resulting in amblyopia. This cause is the most common. 2. Amblyopia caused by strabismus: Amblyopia caused by one eye being skewed and not being able to see well. 3. Masked amblyopia: Amblyopia is caused by congenital eye diseases such as cataracts, which obscure the eye. 4. Refractive amblyopia: The child’s vision is very good in one eye, for example, up to 1.0, while the vision in the other eye is poorer by 0.1, resulting in amblyopia in both eyes. The main methods of amblyopia treatment: Except for masked amblyopia, which requires surgery to remove the cause, most children need glasses. Secondly, some amblyopia may require an eye shield, which covers the good eye and allows the bad eye to exercise and strengthen the training. But only by wearing glasses, cover up is not enough, but also must be supplemented by amblyopia instrument training, such as red light flash therapy, after image therapy, and light brush therapy, in addition there is a comprehensive treatment instrument, etc. There are many amblyopia treatment instruments, according to the different characteristics of the child and different circumstances to choose the appropriate treatment instrument. The parents of amblyopia treatment must be persistent and not in a hurry. In addition, the older the treatment, the worse the effect, internationally recognized is the best time to treat before the age of 6, after the age of 12 amblyopia cure is hopeless. Therefore, choosing the right time and parents’ confidence and persistence are fundamental to the cure of amblyopia.