天花粉的传统产地加工方法是于秋冬季节采挖鲜根,刮去栓皮,切成小段,对剖为二,晒干即得。此法对直径为2～4cm的天花粉确有实用意义,但直径超过6cm以上者,再用此法不仅难于晒干,时间稍长则极易变色甚至生霉变质。因此,各地常用鲜品横切片的方法为对策,即挖出块根,刮去老皮,立即 The traditional production method for the production of TCS is to dig fresh roots in autumn and winter seasons, scrape the cork, cut into small pieces, cut it into two pieces, and dry it. This method has practical significance for the diameter of 2 ~ 4cm of TCS, but the diameter of more than 6cm or more, and then this method is not only difficult to dry, a long time is easy to change color or even mildew. Therefore, the method used for cross-sectioning of fresh products in various places is a countermeasure, that is, digging out the roots and scraping the old skin immediately.