Electronics, including computers, TVs, cell phones, iPads, handheld game consoles, etc., have become an integral part of modern life, but long-term uncontrolled use can cause certain damage to the eyes and health. A series of syndromes are caused. These include symptoms of visual fatigue such as eye congestion, dryness, foreign body sensation, increased secretions, and soreness and fatigue in the neck, shoulders, back and arms. It can be manifested as a temporary decrease in visual acuity, decreased adjustment sensitivity, decreased fixation ability, dry eye, and myopia deepening. High-intensity and prolonged close work can lead to a temporary decrease in distance vision, because the regulation system of the human eye is in a high-intensity state when seeing things at close range. Some studies have confirmed that children and adolescents who read books for more than 40 minutes will experience a spasm of regulation, resulting in reading-related temporary myopia (NITM), which is closely related to the occurrence and progression of myopia. As a more specific item that needs to be worked on at close range, the damage to the eyes after long-term use of electronic products includes not only the effects of close work on the eyes, but also the characteristics of their electronic display terminals. The brightness of the display is too high, the lack of background lighting leads to the display of the brightness contrast is too high, the screen glare generated by poor room lighting angle, etc. will add importance to fatigue and over-regulation. The rapidly changing contents of electronic products tend to reduce the number of transient eyes of the user, reducing the secretion of tears; radiation from electronic screens can also increase the evaporation of tears and aggravate dry eye symptoms. Children as a special group of people, the refractive state of the eye is still in the developmental stage, can be affected by bad visual habits to develop myopia, and for the use of electronic products, the method of independent control is poor, so it is a high-risk group of electronic product use. However, electronic products are special carriers of children’s learning, and good habits should be developed to minimize their impact on children’s visual development. First, pay attention to the distance of electronic products when reading. Try to do the display and eye distance of 20-30cm or more, to reduce the need for adjustment when reading, try to choose the larger screen products. Because the smaller the screen, the easier it is for users to shorten the reading distance without meaning to. Second, pay attention to the ambient lighting when reading. Try to provide ambient lighting behind the screen to reduce the relative brightness of the screen and reduce the symptoms of visual fatigue, but the lighting source is best to use flood lighting to avoid screen reflection. Third, pay attention to the use of time. You can use multiple reading, short reading time, each continuous reading time of no more than 1 hour, in order to reduce the impact of regulatory spasm on myopia. Each interval of 10-15 minutes is appropriate, looking into the distance or green objects, can relax the regulation system of the human eye. Fourth, children’s refractive status should be tested regularly with appropriate time for outdoor activities. 14 years old is the critical period for the development of children’s refractive status, which does not stabilize until 18 years old. This is a time of heavy school workload and avid use of electronic devices, and the development of myopia is extremely rapid. Therefore, it is especially important to check the refractive status every six months, and timely prescription or behavioral interventions are important for myopia prevention and control. A large sample of multicenter clinical trials have confirmed that time spent outdoors is inversely correlated with the incidence of myopia and is an effective protective behavior. Therefore, reducing the use of electronic devices and increasing children’s time spent outdoors is an effective way to prevent myopia.