One and a half year old baby can not speak, may be a normal situation, there may also be pathological problems. Because children of different ages speak early and late, in because of individual differences and family language environment can lead to speak successively abnormal, parents in daily life need to strengthen the language exchange with the baby, through the initiative to induce the baby to speak to strengthen communication, at the same time to the baby to listen to children’s songs, listen to songs also help language development. In addition, the lack of communication between the elderly and their children can also cause babies to fall behind in their language development. Therefore, strengthening the interaction and language communication with the baby is the main purpose. It is also important to pay attention to the baby’s language training environment, and to strengthen the imitation of adult’s mouth and language, so as to ensure that the baby’s language develops normally. Neurodevelopmental diseases, such as cerebral palsy and backward language development, should be ruled out, and the baby needs to go to a regular hospital for relevant examinations. It is recommended to consult a physician to assess the baby’s condition.