A 1 year and 7 months old baby who cannot speak may be suffering from abnormal language development and prompt medical evaluation is recommended. According to the process of neuropsychological development of children, 18-month-old babies should be able to recognize and name all parts of the body, their own names, and objects used in daily life, etc. The reasons why 1-year-old 7-month-old babies can’t speak may be due to delayed language development, abnormal intellectual development, hearing abnormality, autism, etc., which need to be clarified by the perfect intelligence assessment scale, hearing screening and other tests. Parents are advised to bring their babies to the doctor for consultation and treatment in time, especially for babies who cannot speak due to delayed speech development and hearing abnormality. Early intervention can avoid missing the period of speech development and minimize the serious impact on the babies. If exclude the cause of the disease, parents can strengthen the intervention in daily life, to avoid the baby’s diet is too soft, exercise the baby’s oral chewing ability; more to encourage the baby to speak, let the baby to express their own meaning, the parents to be corrected, tell the baby how to express correctly; more to talk with the baby to interact with the baby, to avoid too much to the baby to watch TV, electronic products. 1 year old 7 months baby can not speak, need to timely medical treatment, avoid delayed treatment.