The 13^th Five-Year Plan offers a window of opportunity for the build of modern elderly care system and the development of elderly care service industry. China's population ageing shows new features including turbulent aged population growth，slightly slowed ageing increases，an increasing urban and rural inversion in ageing，etc. China has made some achievements in the elderly care service industry development，for example consumption needs of the elderly upgrades，the public and private elder care services co-exist，the trend of mutual promotion of elderly care services and supplies becomes more obvious，the cooperation among the government，market and other communities speeds up. According to the calculation of China's elderly care service demand during the 13th Five-Year Plan period，the development of elderly care service industry should focus on the contradiction caused by the unbalanced and inadequate development，keep improving the quality and efficiency of the service，and accelerate the transformation and upgrading of the elderly care service sector to modern services.