Analysis of Long-term Care Insurance Demand of Megalopolis in China under the Background of Aging of Population—Take Shanghai as an Example†

China’s aging has the characteristics of getting older before getting rich, growing rapidly, and having a large population base. As of the end of 2018, according to the data of the National Bureau of Statistics, the number of people above 65 in China is 165.65 million, accounting for 11.94% of the total population. Among them, the old-age dependency ratio is 16.8%, which means that every 100 working population in China needs to support 16.8 old people. The aging disability phenomenon in China’s mega-cities represented by Shanghai is particularly serious. According to the data compiled from the Shanghai Sixth Census Bulletin, the disability rates of the 60–80-year-olds in Shanghai are 5.0275%, 14.8139%, and 32.7914%, the severe aging trend has promoted the demand for elderly care.