A five-year-old child with loose incisors is generally close to the tooth replacement period, and it is normal for children to change their teeth earlier due to individual differences. If it is caused by external reasons such as accidental injury or caries, it is an abnormal situation. 1. Normal situation. Research and investigation of tooth replacement period is generally about six years old, but according to the individual physique, may appear, early replacement of the situation, at about five years old, permanent tooth germs began to erupt, caused by the loosening of the milk teeth, this is a normal situation, can be examined in the hospital after observation. 2. Abnormal situation. If you go to the hospital to check the film, to exclude tooth decay and inflammation caused by tooth loosening. When the teeth are hit by external forces or bite hard objects, may also cause tooth fracture or tooth shock caused by loosening, need to go to the hospital immediately for examination and treatment. It is recommended that a five-year-old child with loose incisors first go to the hospital for radiographs and examination, based on the oral condition, medical history, and then comprehensively confirmed.