The amblyopia training after cataract surgery in children should last for about 1~3 years, but the exact time needed for the training needs to be judged in the light of the actual condition of the patient and the way of care and other aspects. After cataract surgery in children, patients need about 1~3 months to adjust to the physical condition, and when the eyes recover, if amblyopia exists, amblyopia training is needed. If the patient’s amblyopia is more serious, it will take a longer time for the patient to undergo amblyopia training, and it may take about 2~3 years for the amblyopia to be relieved. If the patient follows the doctor’s instruction to do reasonable eye exercises to improve the condition of the eyes, then the amblyopia treatment may work better, and the amblyopia may be relieved in about 1 year. It is recommended that patients consult the ophthalmology department of a regular hospital, conduct amblyopia training under the guidance of a doctor, and consult a doctor promptly if they feel unwell.