To obtain reclaimed pulp of high whiteness with slight residual ink content and minute residual ink particle size by addition of a deinking auxiliary comprising a specific aromatic sulfonic acid (condensate) in a step before the flotation for recycling printed waste paper.

This deinked reclaimed pulp is obtained by addition, in a step before the flotation, a deinking auxliary comprising a compound of formula I (R1 is H, a halogen, alkyl or the like; X1 is H, Na, K, an inorganic or organic substituted ammonium salt of the like; Y1 is H or OH; n is 2-300), formula II (X2 is H, Na, K, an inorganic or organic substituted ammonium salt or the like; m is 2-300) or formula III (R3 is H, a halogen, alkyl or the like; X3 is H, Na, an inorganic or organic substituted ammonium salt or the like; Y3 is H or OH; p+q is 2-300).