Abstract Background Accurately predicting the future development trend of population aging is conducive to accelerating the development of the elderly care industry. This study constructed a combined optimization grey prediction model to predict the structure and density of elderly population. Methods In this paper. a GT-FGM model is proposed. https://www.diegojavierfares.com/flash-pick-Mooney-M20J-1979-1980-Pilot-s-Operating-Handbook-part-1223-great-buy/