Multivitamins are suitable for people with vitamin deficiencies, and are mostly used for adults, whose vitamin ratios and dosages may not be suitable for children, and may easily cause vitamin overdose or poisoning. In general, it is not recommended to give children to eat multivitamins, especially children do not picky eaters, nutrition comprehensive and balanced, often participate in sports, etc., is generally not a lack of vitamins, so there is no need to supplement additional vitamins. In addition, multivitamins are mostly synthetic, long-term use will contain some substances that may have a certain impact on the body. Moreover, multivitamins are mostly used for adults and contain many minerals in addition to vitamins. The ratio may be too much for children, which may increase the burden on the liver and kidneys, and may cause toxicity of certain vitamins. If a child is diagnosed with a deficiency of a certain vitamin, it can be supplemented through dietary adjustments and, if necessary, supplemented accordingly under the guidance of a doctor.