In life if a 2-3 year old child does not speak: the first thing to consider is the environment, for example, usually the child lives in an environment where few people speak, so that the child’s speech will be delayed a bit. As long as the environment is improved and language training is strengthened, the child will soon be able to speak normally. Secondly, we need to consider some diseases that cause children not to speak, such as mental retardation, cerebral palsy and hearing impairment. In conclusion, if a 2-3 year old child does not speak, it is recommended to go to a pediatrician or neurologist for a physical examination and a cranial MRI to further clarify the cause before effective treatment can be given.