Disclosed is a method for detecting regulatory dendritic cells, the method comprising step a: detecting the presence or absence of one or more types of molecules on a cell surface in a cell population that comprises regulatory dendritic cells; and step b: identifying regulatory dendritic cells on the basis of the presence or absence of the one or more types of molecules. Also disclosed is a method for producing a cell population enriched for regulatory dendritic cells, the method comprising step 1: detecting the presence or absence of one or more types of molecules on a cell surface in a cell population that comprises regulatory dendritic cells; and step 2: obtaining a cell population enriched for regulatory dendritic cells on the basis of the presence or absence of the one or more types of molecules. Further disclosed is a cell population enriched for regulatory dendritic cells obtained by the method.