In view of the problems existing in the credit information of China's old-age care industry, in order to establish a sound old-age service credit information system and guarantee the quality of old-age service, the standard of pension service credit standard and the trust mechanism and reputation algorithm based on old-age service are formulated for development. The Health Support + “Integrated Support Platform provides theoretical support for credit assessment and provides a comprehensive solution for the credit problems in the aged care service. The project is supported by the National Key Basic Research Development Program (973 Program).