There are no treatments that can shorten the eye axis, only treatments that can temporarily slow its development. The eye shaft is generally referred to as the length of the eyeball. It grows gradually as the body develops, and when a person is nearsighted, the eye axis also becomes longer. The development of the eye axis is a natural and irreversible process, so there is no viable training that exists to shorten the eye axis. There is no method to shorten the eye axis, but only to prevent it at an early stage and slow down the progress of the growth of the eye axis. Specific practices are the same as the prevention and treatment of myopia, mainly to increase the patient’s outdoor exercise time, reduce the patient’s use of cell phones, computers and other electronic products, to avoid the patient’s use of electronic products at night, to avoid the patient to stay up too late phenomenon. Appropriate increase in the intake of carrots and other foods rich in vitamin A can also play a certain role in alleviating the growth of the eye axis.