Large gaps in children’s teeth may be caused by dental malocclusion or may be a temporary manifestation due to the jawbone being in a period of growth and development as well as the eruption of teeth. 1. Dental malocclusion. In the period of milk teeth and jaws generally do not appear in the case of large gaps between the teeth, the appearance of large gaps between the teeth, may be caused by dental development problems or teeth misalignment. 2. Performance during growth and development. In the late period of milk teeth and jaws and mixed teeth, due to the jawbone is in the period of growth and development, the jawbone will become wider and there will be a gap, in the process of tooth replacement, due to the position of the upper lip tie is too low or the tooth germ eruption compression of neighboring teeth roots, can cause temporary gap. It will get better after the tooth replacement period. Children’s teeth gap, generally mainly to observe the main, to be replaced after the completion of the period, if still exist, need to consider orthodontic alignment of the teeth, specific can consult a professional physician’s opinion.