Abstract: 【Purpose/significance】The service capability of platform employment users is the basis for the development of platform economy. Identifying the components of the capability information of platform employment users can provide platform economic data information to reference for the matching and supervision.【Method/process】Taking the employed users of the platform as the research object, the grounded method is used to extract the components of their capability information and clarify the functional relationships among the information elements. The evaluation method of quantity and quality coordination is applied to construct the evaluation sys⁃tem of employment users information matching on the platform.【Result/conclusion】The four information capability elements are mainly reflected in basic information, service information, collaboration information and development information. The information matching monitoring system based on platform employment users' ability can be used to monitor the information matching quality of employment users on the platform.【Innovation/limitation】The ability information of platform employment users is extracted through grounded theoretical methods, and the theoretical path of ability information matching monitoring is discussed, which needs to be fur⁃ther obtained platform employment user data for practical testing.