In recent years, through multiple pilot projects, China has accumulated some practical experience in developing long-term care insurance, but the financing is still a key and difficult issue. At the same time, China's interregional economic and social development is uneven, and various regions face different problems and difficulties in financing long-term care insurance. Therefore, this article takes Hainan Province as an example to analyze the demand scale and the financing path of regional long-term care insurance. The study found that with the continuous deepening of population aging, the number of disabled elderly aged 60 and above in Hainan Province will continue to increase, and the funding burden will continue to increase. It is estimated that by 2050, the total number of disabled people in Hainan Province will be 471300, including more than 60000 severely disabled groups. In terms of demand, if long-term care insurance covers moderately and severely disabled people, the scale of long-term care insurance demand in Hainan Province will reach 3.35 billion yuan by 2050. In terms of financing, the burden on employees, residents, enterprises, finance and other entities will continue to increase, and the growth rate will continue to expand over time.