The present invention relates to a super absorbent polymer which generally exhibits balanced and superior physical properties through the optimization of retention capacity, absorption under pressure, liquid permeability, and gel strength. This super absorbent resin comprises a cross-linked polymer obtained by surface cross-linking a powder type base resin prepared by polymerizing water-soluble ethylene-based unsaturated monomers having an acidic group of which at least a portion is neutralized, and the centrifuge retention capacity (CRC), absorption under pressure (AUP), gel strength (G'), and saline flow conductivity (SFC), of the super absorbent resin can satisfy predetermined relational expressions.