The present invention relates to a method for preparing a superabsorbent polymer including a) preparing a hydrogel phase polymer by thermopolymerizing or photopolymerizing a monomer composition including a water-soluble ethylenically unsaturated monomer and a polymerization initiator； b) chopping the hydrogel phase polymer； c) adding particles having properties of the following i) and ii) to the chopped hydrogel phase polymer； d) chopping the particle-added hydrogel phase polymer again； e) drying the hydrogel phase polymer； f) milling the dried hydrogel phase polymer； g) adding a surface crosslinking agent to the milled hydrogel phase polymer； and h) carrying out a surface crosslinking reaction.i) BET specific surface area of 300 m2/g to 1500 m2/g,ii) Porosity of 50% or greater.
