Two-month-old babies do not respond to sound, usually caused by hearing impairment, autism and so on. It is recommended to go to the hospital in time to identify the cause of the disease and timely treatment. 1. Hearing impairment: Hearing impairment may be caused by acquired injury or congenital problems, generally babies are born with jaundice, asphyxia, encephalopathy and other symptoms, which may damage the baby’s hearing nerve. It is recommended to go to the ear, nose and throat department of the hospital in time to do hearing screening, timely identification of the cause of the disease, timely treatment, to avoid the child’s poor speech development, if necessary, may have to cooperate with the doctor to use cochlear implants. 2. Autism: Autism is mostly related to genetic factors, usually showing a lack of response to calls, avoidance of gaze, communication disorders, repetitive behaviors and other symptoms. It is recommended to go to the hospital in time, identify the cause of the disease, the doctor will be based on the patient’s specific situation for treatment, mainly divided into general treatment and drug treatment, general treatment is mainly divided into intervention training treatment and dietary supplements treatment. Therefore, more than two months of the baby has a sound test hearing does not respond, it is recommended to timely go to the hospital to identify the cause and diagnosis and treatment, to avoid the child’s language development is poor.