Migrant older persons face higher health risks,but the level of social support from the government,the society,communities and families in China is generally low,which is shown as follows.In terms of social security,there are problems such as low rates of insurance participation and low levels of reimbursement in places other than the place of a person's household registration.The coverage of public services in grassroots communities is limited,and the participation rate of migrant older persons in activities is low.In terms of informal support,the level of family support is insufficient,and nearly 40%of migrant older adults are in a state of"social isolation".It is suggested that the level of health support for migrant older persons be strengthened through improving relevant security systems,enhancing the supply of public services,boosting family support,and encouraging them to rebuild their social networks.