In the World Health Organization’s latest report published in 2018，the World Health Organization made a comprehensive comparison on the “medical level”，“the difficulty of receiving medical services”，“the equity of medical expenses” and other aspects. Japan was the first in Europe and the United States because of its “high quality medical services”，“the low level of medical burdens” and “the high average life expectancy of its citizens”. Japan’s excellent medical system not only takes care of the quality of life of all the people，but also makes a great contribution to making Japan the longest-lived country in the world. The Japanese people’s longevity is the first in the world，which is mainly reflected in their medical history，medical environment，medical level，national insurance system and drug use.