There is no scientific basis for whether children speak later or earlier, and there is no direct relationship between children’s early and late speech and intelligence. If the child’s living environment, more people to communicate, and speak more clearly and slowly, the child himself is not sick, actively encourage and guide the child to pronounce the words to speak, the time to speak may be earlier; if the child’s living environment in the language of monotonous or more complex, may affect the child’s time to vocalize, so speak sooner or later does not mean that the child is smart or not. Children’s speech time has relatively large individual differences, but if the child after two years old still can not speak, parents should pay attention to and give more companionship and language training, if necessary, need to take the child to the hospital for diagnostic examination, check the language and the central nervous system development is normal, to avoid delaying the condition caused by the adverse effects.