Delayed walking in babies may be related to physiological factors, vitamin D deficiency rickets, and delayed gross motor development. 1. Physiological factors (1) Psychological character factors: if the baby just walks late, all other development is normal, may not have anything to do with the baby’s physical development, may be the baby’s character is quiet, timid nature, so walking late, this time the need for parental encouragement, guidance. (2) Other factors: If the baby wears more clothes in winter, it will look more clumsy and may affect the baby to learn to walk. 2. Vitamin D deficiency rickets: if the baby is not supplemented with vitamin D in time after birth, it can cause rickets, and some of the affected children will show late walking. 3. Delayed gross motor development: babies with delayed gross motor development are behind children of the same age in head erection, turning over, sitting alone, etc. Therefore, if you find that the overall development of the child is later than that of children of the same age, it is necessary to consult a doctor in time. 4. other diseases: if the baby himself muscle joint diseases, such as pediatric benign congenital flaccid syndrome, congenital lateral dislocation of the hip joint, progressive spinal cord hypokinesia, etc., can lead to the child’s gait instability or walking delay. As you can see, you also need to pay attention to whether there are other uncomfortable symptoms when the baby walks late.