As a country with more developed insurance market, the United States has a better system of dental insurance. From 2011 to 2016, the tightening of the U.S. economy made it impossible for companies to provide comprehensive dental insurance for employees, but the size of the dental insurance market was still expanding slowly. In the past five years, the us dental insurance market has generated $75 billion in revenue, with annual growth averaging 2.3%. In 2015, health insurance premiums in the us life insurance market amounted to $159.855 million, of which 9.82% were dental premiums. According to IBISWorld statistics, at present, the American Dental insurance about 300 Dental insurance companies on the market, the largest of which is Aetna Inc, Delta Dental, MetLife Inc., etc., in addition, there is a kind of insurance provided by the government -- Medicaid (medical assistance). Between 2011 and 2016, a total of 1,444 enterprises engaged in the dental insurance market, including 896 employees. American industry analysts believe that dental insurance market sector revenue is expected to accelerate the increase in the coming years, including the increase in U.S. jobs, dental care and plan premium growth will be slow and so on. Up to now, there are about 200 million people in the United States has a certain degree of dental insurance, among the 200 million people, 150 million people have some sort of commercial dental insurance, and the rest of the 50 million people from government projects like Medicaid insurance.