When a doll speaks late, it is necessary to distinguish whether it is caused by physiological or pathological reasons, and to give targeted adjustments and treatments, such as strengthening verbal communication, rehabilitative therapy, and improving hearing. Infants and toddlers can speak some simple words around 1 week old, and there are usually individual differences in the timing of infant and toddler speech. If an infant’s speech lags behind that of a child of the same age, it may be due to less communication between the parents and the child, or the child’s exposure to electronic products. In this case, parents should communicate with their children more often and avoid exposing them to electronic devices. At the same time, let your child have contact with children of the same age to provide more opportunities for communication. If an infant or toddler is late in speaking and has a lower cognitive level than children of the same age, he or she should be evaluated at the local hospital and given early rehabilitation if the child has intellectual problems. In some cases, late speech can be caused by congenital deafness or hearing impairment, in which case the child should actively cooperate with the doctor for treatment, and may be given a hearing aid to improve hearing. Parents should pay close attention to their children’s late speech, communicate with them more often, and seek medical attention in time for relevant checkups.