hereditary factor

Some gene mutations or genetic diseases may lead to language retardation in children.

Neurodevelopmental problems

Abnormal development of nervous system may affect children's language ability.

Hearing problems

Hearing impairment may cause children to be unable to hear correct pronunciation and language information, thus affecting their language development.

social environment

Lack of communication opportunities and social interaction may affect children's language development.

home environment

Family education, parents' professional and cultural background may also affect children's language development.

Other health problems

Some health problems, such as autism and mental retardation, may also lead to language retardation in children.