The baby is one and a half years old and still can’t speak need to find out why, may be physiological, may be pathological; physiological attention to guide the communication can be slow to improve, pathological, such as hearing disorders, cerebral nerve damage, etc., need to consult a doctor in a timely manner, standardized treatment. 1. Physiological: due to individual differences, some babies have late development of the language center, but normal intelligence, is a normal physiological performance. Baby parents pay more attention to guide, encourage the baby to repeat simple words, create a language environment for the baby, can improve the situation of non-speaking. 2. Hearing impairment: babies in a noisy environment for a long time, fever treatment is not timely, congenital deafness can lead to babies do not speak, parents should take their babies to the doctor in time to do the relevant examination, if necessary, can be implanted with cochlear implants. 3. Brain nerve injury: Brain nerve injury may cause cerebral palsy, and in serious cases, there will be mental retardation, hearing loss, epilepsy and other symptoms. Parents should consult a doctor in time for early treatment, and take medication and hyperoxia treatment under the guidance of a doctor, e.g. vitamin B1, methylcobalamin, etc. In daily life, rehabilitation training can be done. In daily life, rehabilitation training can be done to guide the speech. Baby more than one year old can not speak, excluding physiological factors, need to consult a doctor in a timely manner, under the guidance of a professional doctor to take appropriate measures; the above drugs need to be taken under the guidance of a professional doctor, to avoid taking them privately, so as to avoid harm to the baby.