Abstract: In this paper, poly(acylic-acylamide)/sodium humic acid(PAA-AM/SH) superabsorbent composite were synthesized by aqueous solution polymerization based on acrylic acid(AA),acylamide(AM) and sodium humic acid(SH).Water absorbency in aqueous solutions, water retention capability and release property of humic acid of PAA-AM/SH superabsorbent composite were investigated. The results showed that PAA-AM/SH superabsorbent not only have well absorbency and water retention capability, but also have slow release capability of humic acid.