One and a half year old babies always sweat a lot in bed, there are two specific reasons for this: first, because before going to bed the child is too excited to play, the development of the child’s nervous system is not perfect, the cerebral cortex is not fully restored to normal, due to plant nerve dysfunction, it is easy to sleep within two hours after going to sleep the phenomenon of sweating. The second aspect is that the phenomenon of night sweats caused by vitamin D deficiency or calcium deficiency, which usually occurs in the second half of the night, can take the child to the hospital for calcium or vitamin D examination, and give reasonable calcium and vitamin D supplementation, and at the same time, pay more attention to the sun in daily life, which is conducive to the synthesis of vitamin D in the skin, and more conducive to the absorption of calcium. The symptoms of sweating in bed can be significantly improved.