If your baby is one year and four months old and can’t speak, you need to consider whether there are factors such as hearing impairment, intellectual disability, and language function development disorder, etc. You need to go to the hospital to check the level of your child’s hearing, intelligence, and language development, and patiently guide your child to speak. 1. Hearing impairment: If your baby can’t speak at the age of one year and four months, you need to consider whether there is a hearing impairment. Because the baby may not be able to speak if he can’t hear the outside world. Parents should take their children to the hospital for hearing screening in time, and if there are hearing problems, they can wear hearing aids or cochlear implants. 2. Mental retardation: If your baby can’t speak at the age of one year and four months, you also need to consider whether there is mental retardation. If the baby’s brain development is congenitally delayed or the brain is deprived of oxygen at birth due to various reasons, it is possible that the brain’s intelligence level will be affected. This leads to reduced learning ability and inability to speak. Parents need to have their baby’s intelligence level tested. 3. Disorders of language function development: 1~2 years old is the peak period of children’s language development, if the child’s language development function is abnormal, it may lead to the phenomenon of late speech. Parents should patiently educate and guide their babies to speak and communicate with them frequently. If the baby appears to be one year and four months old and still can’t talk, parents must consult the doctor in time. Screening of the child’s hearing, intelligence and language development level. After clarifying the reasons for not being able to speak, targeted treatment will be carried out.