Gray nails are caused by fungal infection, which is contagious. Babies’ body resistance is already low, and their skin and nails are easily infected. So try to stay away from babies and don’t touch them with diseased nails. Gray nails need to be treated in time, and wait until it is cured to take care of the baby. Gray fingernails can be cured, you can use the following antibacterial drugs, such as amorphophallus hydrochloride cream, nail Likang and other drugs, usually also need to pay attention to the care of the nails, cut the nails diligently and wash your hands, pay attention to the disinfection around the nails.