Baby six months can sit in the stroller, but also depends on the individual situation. Before six months, the baby’s lumbar spine development is relatively immature, lumbar strength can not support the weight of the upper body, can not sit in the stroller for the time being. Most babies can sit alone after six months, the waist strength can support the weight of the upper body, can sit in the stroller. Some babies motor development is late, the time of sitting alone may be later, sit in the stroller time according to its development should be appropriately delayed, to avoid damage to the lumbar spine, is not conducive to the normal development of the lumbar region. Baby sitting in the stroller need to strengthen the safety care, to avoid accidents, the baby is relatively young, sitting in the stroller time should not be too long, to try to shorten, to avoid lumbar vertebrae and local muscle damage occurs. Baby’s growth and development has a gradual process, the baby can not yet do things do not advance.