The present invention aims at providing: a recycling usable regenerated particle aggregate; a method for allowing stable manufacture of the regenerated particle aggregate; a paper containing the regenerated particle aggregate, the paper exhibiting excellent property in case of newsprint papers, printing papers, book printing papers, and electrophotographic printing papers that use the regenerated particle aggregate, and especially a neutralized paper containing the regenerated particle aggregate; and a coated paper for printing having especially excellent printability, using the regenerated particle aggregate. Problems will be solved by: a regenerated particle aggregate obtained through dehydration, drying, calcination, and pulverization using a deinked froth discharged at a used paper deinking treatment process as a main raw material; a method for manufacturing the regenerated particle aggregate; a paper containing the regenerated particle aggregate as an internal filler; a coated paper for printing having a coating of the regenerated particle aggregate as a pigment for coating.