A child’s delayed language development is characterized by late speech, poor language skills, and poor response and reaction skills. Delayed language development means that during the process of development, the language development of a child follows the normal developmental sequence, but lags behind the normal developmental speed and fails to reach the level of the corresponding age, and its main causes may be related to hearing impairment, diseases of the sound-forming organs, mental retardation, poor language environment and other factors. Children with delayed language development may speak later than their peers, have poor language expression and application of vocabulary and grammar, and respond poorly to other people’s questions, etc. Some children with delayed language development may also have emotional and psychological abnormalities. Parents are advised to bring their children to the doctor in time for medical examination, and carry out targeted treatment after clarifying the condition. In their daily life, they should also create a good language environment for their children, and carry out language exchanges frequently, which is conducive to increasing the amount and diversity of language, and conduct medical checkups on time.