Twenty-five months baby boy will not speak common causes of hearing impairment, autistic tendency, certain diseases, etc., can be used language training, psychological counseling, specialist treatment and other ways of treatment. 1. language training: if the baby does not speak is due to hearing impairment caused by, you can wear a suitable hearing aid for language training. Language training can first exercise the baby’s oral muscles, tongue flexibility, after good control of the muscles around the mouth, guide the baby to imitate, starting from simple pronunciation to short phrases, during the period of more exchanges with others, in order to resume speaking as soon as possible. 2. Psychological counseling: If the baby’s inability to speak is caused by autistic tendency, it is necessary for parents to care more about accompanying the baby on a daily basis, and encourage and guide the baby’s speech through storytelling, games and other ways. 3. Specialized treatment: if for the cause of disease, if cerebral palsy, mental retardation, etc., it is necessary to according to the different causes of the original disease treatment. If the twenty-five months baby boy can not speak, you should seek medical treatment as soon as possible, after clarifying the cause of the disease by the doctor to formulate an individualized treatment plan, so as to avoid delaying the condition.