At birth, newborns can respond to light and see blurred images within 20-30 cm. At about 1 month, newborns can gradually see objects and people with a visual range of about 50 cm. The neural system of newborns is not well developed, so they can see objects within 20 cm, such as toys placed on the side of the bed and the mother’s side face during breastfeeding, etc. At about 1 week, they can see objects within 20 cm; At the age of 2 months, infants can follow objects within 20-30 cm to move from left to right and up and down, which is called chasing vision; after 3 months, they have the ability to recognize visual discrimination, and at this time they can recognize objects with very bright colors, such as red and yellow toys. The stereoscopic vision and subjective orientation developed by infants can only be further enhanced with development and interaction with the outside world. Therefore, parents should avoid exposing their newborns to strong light sources for long periods of time, and use visual cards and color cards to exercise their newborns’ ability to recognize objects and stimulate the healthy development of their visual system.