The water-soluble Polyether-containing Aminopolysiloxane (SPEAS)was synthesized, the viscosity, amino value and nd20 of which were 0.150~1.800 Pa•s, 0.200~0.596mmol/g and 1.6567~1.6685.The optimum conditions were 60~100℃(reaction temperature), 4~8 h (reaction time). Then the structures and properties of the samples were analyzed by FTIR,1H- NMR and TEM. Experimental results showed that the size of the particles of such aqueous dispersions at 2.0% are different. The bending rigidity of the treated fabric decreased (the soft hand-feeling enhanced), its wrinkle ecovery angle increased and static water absorption time downed to 1″48.