Most babies who can’t talk at 30 months are abnormal, and need to go to the hospital in time for hearing impairment test, intellectual development level test, oral and tongue development is abnormal and other aspects of the examination. The baby 30 months is equivalent to already two and a half years old, at this time still can not speak most are due to pathological factors, such as hearing abnormalities, intellectual development backward, mouth and tongue development abnormalities, etc., and will also be accompanied by autism, spitting out words, developmental difficulties and other responses, it is recommended that timely to the hospital to carry out the relevant examination and active treatment. In addition, some of the babies can not speak at 30 months may be congenital speech delay, later through more communication, more communication may slowly return to normal. It is recommended to consult a doctor in time, after the cause of the disease is clear to carry out targeted treatment.