The child was more than 1 year old, with normal gross motor activity and good interaction with others, but he could not speak. When asked, the mother admitted that when she was taking care of the child, she thought the child was very good and could lie down and play for a long time when given a toy, so she looked down at her phone. When it was grandma’s turn to take care of her, she listened to opera with headphones in, and did not interact with the child. On the other hand, according to the mother’s description, the house was quiet and the TV was rarely on. In this case, the child lacks an environment to learn language, and the child, who was born with a blank sheet of paper, naturally does not speak. The language development of children aged 0 to 3 years old requires human interaction and intentional communication. Of course, there is no single reason that affects a child’s speech. The following are common influencing factors: 1. Low intelligence Children with low intelligence often cannot understand and express the meaning of words, and have poor imitation skills, so they present parents with a state of not being able to speak. Tips: Children with high-risk factors must have regular medical checkups to detect and treat them as early as possible. 2. Hearing defects Because of hearing defects, children cannot hear other people’s voices, thus affecting their learning of pronunciation. If the damage is not too serious, the child can learn some words or phrases with obvious mouth shape changes by imitating mouth and lip movements. Tips: Newborn hearing screening must be done. 3, “mute” can be divided into neurological factors caused by the loss of voice; brain damage caused by aphasia, mostly with a history of brain injury; psychological factors caused by selective muteness, mostly seen in older children. Tips: Parents should identify their baby’s aphasia problem as early as possible and see a doctor early for intervention. 4.Autism Babies with autism have poor imitation ability, which is also a major cause of late speech. Tips: Not only do autistic babies speak late, they also have communication disorders and no eye contact with people. 5, too spoiled, too concerned Parents are too spoiled, and any needs of the child can be quickly met. A look, a movement, parents immediately know what the child wants something. This situation, in fact, misses the best time to exercise the child to speak. This also leads to the child being lazy and reluctant to talk. Tips: If your child has any needs, be sure to encourage your child to speak up. For example, cups, drinking water, eating, etc., can not say clearly but must be guided. 6, lack of communication and companionship Just like the opening statement of the child, the real meaning of companionship requires interaction between parents and children, learning through play and growing through learning. Tips: often play games with the child, do any action when or see any object to tell the child what this is what that is, and the baby to talk more, more communication. 7, too many guardians, accents are too mixed Many family couples are not a local people, speaking accents are not the same, such as one side Chinese side English, one side Mandarin side Cantonese, etc., such a family environment children will be late to speak, but most can understand both languages. It is not always the child’s fault if he or she is late in speaking or cannot speak. Refer to the above reasons to see if the same problem exists. If you still can’t distinguish between them, it is recommended to visit the hospital as soon as possible so that you don’t miss the best time to intervene.