In the process of accelerating aging in China，local governments have introduced a series of home-based elderly care services policies，and policy tools are also constantly evolving. This article uses the method of policy text analysis to analyze the quantity，types and use of elderly care services policies tools，and explores the evolutionary logic of local government home-based elderly care services policy tools. Research has found that policy tools can be divided into three types：supply type，environmental type and demand type. The overall configuration of policy tools exhibits dynamic characteristics of mutual adaptability in terms of time dimension and internal structure. Its evolution logic is manifested as：from family and government leadership to inclusive and diverse subjects，from hard laws and regulations to flexible measure selection，from traditional bureaucratic operation to intelligent operation of digital services.