Trimmed: to remove weeds, sediment and non-medicinal parts. According to the requirements of different varieties, and some need to scrape off the skin, such as the peony; some thick skin to be trimmed away, such as Phellodendron; some to remove the reed head, fibrous roots and residual leaves and so on, further the size of classification, such as Achyranthes, Radix, Salvia, Angelica, Peucedanum, Shegan, Polygonum cuspidatum, etc.; some should be stripped wooden heart, such as paeonol.
Steaming, boiling, iron-containing starch or sugar of some quality and phlegmatic more medicine, not easy to dry, and some also contain ingredients to make their own decomposition and transformation of certain enzymes, such as by heat treatment, so that enzymes lose their vitality, it can be maintain the potency does not degenerate.

Cutting system: some starchy vegetables such as medicine, such as Salvia, Angelica, Peucedanum, Achyranthes, Shegan, Polygonum cuspidatum, commercial land, puerarin, soil Poria, Scrophulariaceae, etc., we should take fresh sliced, block, or segment, and then to dry; Large easy to dry fruits fruit class medicine, such as the Xuan papaya, lime, bergamot, etc., should first be cut and then drying; bark Herbs such as Eucommia ulmoides, Magnolia officinalis, cinnamon, should also be post-harvest fruit and cut into pieces or plates or roll into a cylinder, and then drying.

The purpose is to facilitate drying: drying long-term storage backup and dry when you try to keep crude drug processing the appearance, smell and the content of the same active ingredient.

Dried: using the sun and outdoor air will flow dried herbs. Drying method generally applicable not required to maintain a certain color and non-volatile oil of the herbs, such as Coix, Arctium lappa, Astragalus, paeonol, Eucommia and so on. Drying method The method is simple, but different methods of different herbs. Drying time usually harvest herbs Tan Fang on the mat, we should note that rain, anti-dew, to prevent wind blown, and often flip, to facilitate its early dry.

Drying: using anti-bake or fire pit low-temperature baking, so that dry ingredients. Drying should control temperature, low temperature could not easily be dry, high temperature affected the quality, such as the roasted rhubarb temperature does not exceed 60 ℃, the temperature is too high then the body of foam dark color, quality, reduced; flowers herbs drying, the temperature can not be is too high, such as the drying temperature of the hands of Yin-hua 38 ℃ -42 ℃.