Six months will not turn over most of the normal physiological factors, such as obesity, too much clothing, etc., but also may be related to brain injury and other factors, need to be analyzed according to the specific circumstances. 1. Physiological factors: most of the baby in six months to seven months will begin to turn over on their own, if the baby due to weather causes overdressed, or obese, resulting in the inability to turn over on their own is a normal situation, generally do not need special treatment. 2. Disease factors: some babies in six months will not turn over, excluding obesity, seasonal reasons, may be related to pathological factors such as brain injury, brain injury will directly lead to motor nerve development behind; in addition to need to pay attention to malnutrition can also lead to the baby can not turn over normally. In the case of six months can not roll over, accompanied by low weight, intellectual development behind and so on, need to go to the hospital in time for relevant examinations, clear diagnosis for targeted treatment.