Large gaps in the teeth not only affect the aesthetics, but they can also cause congestion when eating. In case of large gaps, depending on the situation, direct gap closure and orthodontics can be used to treat the problem. Usually for younger children, if the child is in the period of tooth replacement, large gaps can be temporarily left untreated. As the child grows, the gap will close automatically after the tooth replacement period. However, if the gap is not closed after tooth replacement, children can be treated with orthodontics and all-porcelain teeth. For adults, it is important to take timely treatment if the gap between teeth is large. At present, the common methods to correct teeth are braces orthodontics, crown restoration and orthodontics. Braces orthodontics is currently the most widely used technology in the clinic, mainly in the gentle realization of tooth movement, can reduce the pain brought about by orthodontic teeth; crown restoration method can usually solve the large gaps, crowded teeth, yellowing teeth and uneven teeth and other problems; orthodontics, in the current clinical, orthodontics to take a dynamic vision dimensional full invisible orthodontics, can restore the entire dental arch shape. When the gap between teeth is large, it is recommended to take appropriate remedies according to age and etiology, and to have regular checkups.