Six-month-old babies often cry out at bedtime because their nervous system is not well developed. Usually no excessive behavioral intervention is needed, only appropriate patting and soothing, the child’s symptoms can be improved. Six-month-old babies may be frightened during daytime play and may suddenly cry at night while sleeping. There is also a lack of vitamin D or calcium trace elements, resulting in children’s plant nerve dysfunction, there will also be crying at bedtime, you can give appropriate vitamin D and calcium supplements. At the same time, in daily life, parents are advised to take their babies to outdoor sunshine, which is conducive to the synthesis of vitamin D in the skin and is more conducive to the absorption of calcium elements in the body.