The child lost half of the tooth fell out of the root of the best timely medical examination, symptomatic treatment. 1. If the child is in the stage of tooth replacement, is about to fall out of the teeth, generally lost half of the root did not fall out of the teeth can be timely medical treatment for tooth extraction, so as to avoid root retention, affecting the growth of permanent teeth. 2. If the tooth loss caused by external impact, and not within six months of the impending loss of teeth, this situation is best not to pull out, so as not to lead to the growth and development of the teeth are affected, you can ask a professional doctor to grind off the hard parts of the oral mucosa to avoid damage, and then follow up according to the dental condition of the appropriate treatment. Usually need to observe more children’s tooth loss, but also need to pay attention to health care, to avoid being hit by external forces.