It can be harvested 3-5 years after planting, preferably 4 years. Those harvested in August are called Fu goods, which have more moisture, are easy to process, are tough and white, but their quality and yield are low. Those who harvest in October are called autumn goods, which are hard in texture and difficult to process, but their quality and yield are higher. The digging should be carried out in a sunny day. All the roots of the plants should be dug out, the soil should be shaken off, the fresh roots should be cut off, and they should be stacked in a cool place for 1-2 days. When they lose a little water and become soft (commonly known as running water), the fibrous roots (Danxu) should be removed, and the fresh roots should be held tightly by hand.The root bark is twisted and cracked, and the wood core is pulled out. The high-quality medicinal material, the cortex Moutan, is directly dried in the sun without scraping the skin. The root bark with thick and straight roots and sufficient powder can be scraped off with a bamboo knife or broken bowl slices and dried in the sun, which is the scraped cortex Moutan, also known as scraped cortex Moutan and powdered cortex mantan. The root bark with thin roots, poor powder or insect scars is directly dried in the sun without scraping the outer bark, which is called Lianpi Moutan, also known as Lianpi Moutan, Lianpi Dan and Liandan. When processing, according to the thickness of roots and the size of powder, they are spread out separately according to different commodity specifications for sale. The yield of fresh root of medicinal peony is 800-2000 kg/mu. The drying rate is 30-35%.