Children often talk to themselves when they play by themselves. Some parents think that their children have problems and go to see a doctor, or scold their children for reading silently. In fact, they misunderstood their children. There are external words that make noise and internal words that don't make noise. The latter is a speech when thinking silently. Compared with external speech, internal speech has a more direct relationship with people's abstract thinking and self-control of action. Only when the external language develops to a certain foundation can the internal language appear. Because children's abstract thinking ability and self-control ability are poor, they often say what they think. Therefore, soliloquy is a transitional form in the process of children's speech transformation from outside to inside, and it is a necessary stage in the process of speech development. There are two forms for children to talk to themselves: (1) Children often talk to themselves while playing games, and children have game conversations when they are 3-4 years old. For example, a little girl will pat the doll and say, don't cry, her mother will give you candy. O (2) Question language is the soliloquy of children when they encounter difficulties and have doubts. It can appear when you are 3-4 years old, and it is often more prominent when you are 4-5 years old. For example, what if a child talks to himself when he sees a car? A 5-year-old boy who is absorbed in building a building block will ask himself, where should I put this building block? . With the increase of age, children's self-talk gradually decreases. Generally, after the age of 7, you may occasionally talk to yourself, but it will not appear frequently. If it continues to appear frequently, it should attract the attention of parents.