A 9-month-old baby’s unsteadiness may be due to insufficient training, calcium deficiency, etc., and needs to be treated appropriately. 1. Insufficient training: some parents are worried about the impact of early sitting on the child’s bone development, so usually insufficient training. At the same time, the baby’s own physical quality is poor, therefore, in the absence of external assistance, it is easy to sit unsteadily, do not have to worry too much, usually need to moderate to strengthen the child’s daily training. 2. Calcium deficiency: when parents do not add supplemental food to the child in time, it is easy to lead to the occurrence of calcium deficiency, manifested in the situation of unsteady sitting. The sunshine will help the child’s bone development, and then improve the problem of unsteady sitting. There may also be other reasons why your 9-month-old baby is not sitting still, so we recommend that you go to the hospital in time, complete the examination to determine the cause of the problem, and then give targeted treatment under the guidance of the doctor.