Two abiotic synthesis methods of Schwertmannite were studied through overall comparison, and cleaning methods of synthetic Schwertmannite were improved. Schwertmannite mineral synthesis time of the slow synthesis method and that of the rapid synthesis method are approximately the same. Mineral characteristic peaks and infrared spectrum characteristics of Schwertmannite by the slow synthesis method were more obvious than those of Schwertmannite's by rapid synthesis method. The mineral particle diameters of synthetic Schwertmannite by slow method were larger than synthetic Shcwertmannite by the rapid method. Dialysis cleaning process of synthetic Schwertmannite in traditional slow synthesis method is time consuming, but cleaning procedures of synthetic Schwertmannite are not included in the rapid synthesis method. Dialysis method is more suitable for cleaning synthetic Schwertmannie than the centrifugal method. Dialysis time can be reduced by 20 d through using dialysis bag with 3 500 molecular weight cutoff, and cleaning efficiency is raised greatly. Freeze-drying method can reduce greatly the aggregation degree of synthetic Schwertmannite than constant temperature (40℃) drying. Colors and characteristics of dried synthetic Schwertmannite can be recovered by grinding.