A normal day’s sleep for a seven-month-old baby is usually around 15 hours, but there are individualized differences. A seven month old will typically sleep for about 1 to 2 hours each in the midday and afternoon, and consistently sleep for about 10 hours at night. A full day’s sleep will basically be around 15 hours. However, there will be obvious individualized differences in the sleep duration of different babies and no generalization can be made. Babies in sleep can promote its normal growth and development, some babies sleep time does not meet the above requirements, but if its height and weight growth within the normal range can be, at the same time during the daytime when the baby’s mental state is good, play with the spirit of the spirit of the head is very full, the mood is also relatively high, and the baby’s diet and stools are in the normal range, generally do not need special treatment. If the seven-month-old baby sleep time is significantly longer than usual or reduced, parents should take the baby to the hospital in a timely manner, by a professional doctor according to the cause of targeted measures.