One year and three months will not walk whether normal, can not be generalized, need to be analyzed according to the baby’s specific situation. 1. Normal development: one year and three months of the baby will not walk, usually no exercise in sports, resulting in the baby timid dare not walk on their own, but if the baby can hold objects or hold the hand of an adult, you can walk normally, this situation generally belongs to the normal. General 1 ~ 2 months, the baby will be able to walk on their own, usually pay attention to exercise baby walking. 2. development is not normal: but if a year and three months baby will not walk, will not help to stand, stand wobbly without support, this situation is not normal. It may be related to cerebral palsy, delayed brain development, etc. It is recommended to consult a doctor in time to clarify the specific reasons why the baby will not walk, and take targeted rehabilitation treatment as well as training. In daily life, you can pay attention to let your baby do more crawling, sitting, standing and other activities, which is more conducive to your baby’s motor development.