3 months baby can be held vertically, but the vertical hold time can not be too long, and in the hold to pay more attention to the correct way to hold. The development of neck muscles of 3-month-old babies is not perfect, and some babies’ neck muscles cannot support the weight of their head yet, so when they are held vertically, the babies will be found tilting back. Some babies can support their own heads, but it is difficult to hold them for a longer period of time. Therefore, 3-month-old babies occasionally held vertically generally have no effect, but it is not recommended to hold for a long time vertically, in the vertical hold as much as possible to let the baby lying on the shoulders of adults, to give enough support to reduce the baby’s neck force. As each baby’s condition is different, some babies may be slower development, vertical hold to pay more attention to give enough support to the neck, so as not to cause injury to the baby.