A superabsorbent polymer includes polymer particles, surface cross-linking agents and particles made of silicon-containing inorganic salt. The polymer particles have cross-linking inside the polymer particles. The surface cross-linking agents are covalently bound to the surface of the polymer particles, and the particles made of silicon-containing inorganic salt cover the surface of the polymer particles.一種吸水性樹脂，其包括樹脂顆粒、表面交聯劑以及含矽無機鹽類顆粒。其中，各樹脂顆粒係具有內部交聯結構，表面交聯劑鍵結於各樹脂顆粒的表面，且含矽無機鹽類顆粒覆蓋住各樹脂顆粒的表面。
