In dye printing paste, water treatment, agriculture, electric welding, paper making, ceramics, etc, used as thickener, binding, forming agent. It is a long history that Sodium Alginate is used for printing paste, yarn paste and cleaning paste. It is one kind of excellent paste for printing, which is applicable for printing of cotton, feather, silk and compound fiber especially after active coloring matter become. It has several decades of history and there is no other things can be compared with it at present.