It is recommended that babies wear diapers until they are 2-3 years old. When they are young, they cannot control their own urination and removing diapers early will affect their sleep at night, which is not conducive to rest and affects the secretion of growth hormones. During the day, it will disturb the baby’s play, and forcing the baby to urinate will cause changes in the hip joint and make the baby fearful of urination, and will also affect the development of concentration, so diapers should not be removed too early. Generally, at the age of 18 months, your baby will start to express that he or she has urination and defecation. At this time, you can give more guidance and exercise to choose a suitable and fixed position for urination and defecation, so as to lay a good foundation for taking off the diapers.