If a baby is still unable to speak at the age of two, it is mostly due to the delayed development of the phonological system, which is mainly caused by parents’ failure to provide good guidance during the developmental stage of the child’s infant phonological system. Parents should take their children out to see new things, listen to more people talk, spend more time with their babies, communicate with them as much as possible, the child’s vocabulary will slowly expand up, and develop the child’s interest in speaking. Try to talk with your baby whenever and wherever you can to gradually develop your child’s ability to speak independently. In addition, the content of the conversation should pay attention to the use of fresh words, choose simple and easy to understand language. Some babies are late talkers, so parents should not worry too much and observe the changes in their children to develop their interest. If you are not sure, you can go to the hospital for a professional examination to check intelligence, hearing, etc.