Children only occasionally watch TV, usually does not cause adverse effects, long time watching TV may lead to refractive error, cause myopia and so on. Prolonged television viewing may lead to refractive errors, myopia, etc. Watching television in the wrong position may also affect the development of the spine. As children are curious about new things, they may watch TV. If they only watch TV occasionally, it will not cause adverse effects on children. If they watch TV for a long period of time, it may cause refractive errors, such as myopia or astigmatism, as their eyes are in the process of development, and it may also affect their eye development. In addition, if children watch TV for a long time, the posture is not right, such as often lying down or half lying, crooked watching TV, may also affect the normal development of the spine. There may be other hazards for children watching TV for a long time, parents are advised to reasonably control the time and frequency of watching TV for children, and if they feel unwell, they should consult a doctor as soon as possible for checkups and treatments, so as to avoid delays in their condition.