Newborn side sleep old leakage can be solved by choosing the right diaper, timely change and adjust the sleeping position. 1. Choose the right diaper: newborn side sleep old leakage of urine is a common cause of the diaper model size is not right, so parents should pay attention to the height and weight of the newborn, according to the height and weight to choose the right type of diaper. 2. Timely replacement: diapers can absorb a limited amount of urine, parents should check the saturation of the diaper, if the amount of urine is more timely replacement of new. 3. Adjust the sleeping position: side-lying position itself will make the diaper and the newborn’s skin fit is not close, long-term side sleeping is very easy to cause leakage, parents can help the newborn turn over in time. If the symptoms are not relieved, or accompanied by other uncomfortable symptoms, it is recommended to go to the hospital in a timely manner, to clarify the cause of the targeted treatment.