A optimum processing method of fresh radix asparagi produced in Hunan province was optimized by different boiling time, drying temperature, drying method and processing method. The results showed the quality of product was fine by 25℃ and 35℃ dried,worse by higher 60℃ dried,range in deep color dried by 45℃ and 50℃. Vacuum drying and freeze-dried were superior to drying in the quality of product. Dried in 35℃ got good products after treated by CaCl2 and alume...