Scientific diapering is generally appropriate at around 15 months of age. If diapering too early is not conducive to the development of the baby’s hip joint, it may lead to prolapse or inability to urinate on their own. Scientific diapering can help babies to form good urination habits as early as possible, get rid of diapers and avoid diaper rash. Usually, at 15 months of age, the baby’s mental and physical organs are maturing and bladder control is increasing, which is conducive to training. You should pay attention to the timing and regularity of urination. If your baby has a reaction to urination, you should urinate him/her in time, usually about 10-15 minutes after he/she wakes up from a nap or after eating milk. Do not urinate too often, so that the bladder sphincter is not exercised, causing frequent urination. In addition, parents can cooperate with spoken prompts, such as shushing sounds, to induce urination and demonstrate at the right time.