Disclosed is a method for producing pluripotent stem cell-enriched human dental pulp-derived cells. The method is characterized in that it includes (a) culturing a dental pulp suspension in a feeder cells-culture vessel containing feeder cells whose proliferative ability is suppressed, on a membrane having micropores that can block passage of the feeder cells and supported in the feeder cells-culture vessel in a manner to prevent the lower side face thereof from contacting with the feeder cells, thereby preventing direct contact with the feeder cells, and, (b) a step for recovering the cells proliferating on the membrane.