The frequency of diaper changes for newborns is related to the volume of urine and the frequency of urination. Usually, newborns need to be changed after 2-3 urinations and after each bowel movement. In the process of caring for infants and toddlers, most parents choose to use diapers, which are helpful in reducing skin irritation and alleviating the burden of parental care. The newborn diaper replacement time can be judged according to the amount of milk and the number of urination and defecation, usually 3-4 hours to change 1 time during the day, 4-6 hours to change 1 time at night, but the specific time should also consider the baby’s urine and stool situation. Because the diaper can not absorb the substantial things in the stool. Therefore, it is recommended to change the diapers immediately after each stool to avoid the formation of newborn red buttocks or eczema. In conclusion, quality diapers are strictly sterilized and absorbent, so mothers can choose the right size to use according to their baby’s hip circumference.