Loose teeth in children should be observed to see if the child is in the period of tooth replacement. As the eruption of permanent teeth will cause the root of milk teeth to absorb, resulting in the loosening and loss of milk teeth, usually no special treatment is needed, and it will be possible to wait until the milk teeth have loosened to a certain extent and then fall off on their own. If the permanent teeth have already erupted ectopically and the milk teeth remain, the loose milk teeth need to be extracted. Loose milk teeth can also be due to milk teeth with periapical inflammation, due to periapical inflammation led to loose milk teeth, accompanied by redness and swelling of the gum area or the phenomenon of growing pus, the treatment is mainly to do root canal treatment on the tooth, to remove the infected pulp nerve. Loose milk teeth may also be caused by trauma, to go to the hospital to do a specific examination, if it is caused by the root of the local contusion, the root of the tooth does not appear obvious cracks, the need to carry out local jaw adjustment, you can let the milk teeth do not chew food, temporary observation, if the tooth has been cracked, fracture or root fracture, you can consider the extraction of milk teeth.