angelica dahurica, the name of traditional Chinese medicine. It is a tall perennial herb with a height of 1-2.5m, a cylindrical root and a diameter of 2-5cm at the base of the stem. The basal leaves are pinnately divided once, and the compound umbels are terminal or lateral, and the fruits are oblong to ovoid. The main varieties are Radix Angelicae Dahuricae, Radix Angelicae Dahuricae, Radix Angelicae Dahuricae (original variety) and Radix Angelicae Pubescentis in Taiwan Province. Taking root as medicine has the functions of eliminating diseases, removing dampness, expelling pus and promoting granulation, promoting blood circulation and relieving pain. Indications: common cold, headache, rhinitis and toothache. Red and white leucorrhea, pain, furuncle and swelling, etc., can also be used as spices. Some provinces and regions in the north are cultivated, most of which are produced and sold by themselves, and a few are transferred from other provinces. Generally born in forests, forest margins, streams, shrubs and valley grasslands. Basic introduction Chinese scientific name: Angelica dahurica alias: Xue Zhi, Aromatic world: Plant phylum: Angiosperma: Dicotyledonous order: Umbelliferae: Umbelliferae genus: Danggui species: Angelica dahurica and Angelica dahurica Distribution area: Northeast China and North China Harvest time: summer, Dosage in autumn and winter: 3-1g Toxicity: non-toxic medicinal site, taste, meridian tropism, efficacy, indications, related compatibility, usage and dosage, contraindications, processing methods, physiological characteristics, origin, related discussions, and dried roots of Umbelliferae plant Angelica dahurica or Angelica dahurica. Pungent in nature and warm in nature. Meridian, lung, spleen and stomach meridians. Efficacy: relieving exterior syndrome, dispelling cold, expelling wind and relieving pain, dredging nasal orifices, eliminating dampness and stopping leukorrhagia, relieving swelling and pus, expelling wind and relieving itching. Indications: common cold due to wind-cold, headache, toothache, arthralgia due to rheumatism, nasosinusitis, leukorrhagia, sores and carbuncles. Related compatibility ① It is used equally with Radix Saposhnikoviae and Notopterygii Rhizoma for common cold, headache and nasal congestion. ② It is used with mint, chrysanthemum and Vitex negundo for exogenous wind-heat. ③ It is used together with gypsum and yellow for toothache. ④ It is used with Xanthium sibiricum, Flos Magnoliae and Herba Menthae to treat rhinosinusitis headache. ⑤ It can be used together with dandelion and Trichosanthes kirilowii, but it can be used for treating carbuncle, swelling and sore. It can be used together with honeysuckle and trichosanthes root to treat abscess, swelling, sore and toxic pus. ⑥ It is equivalent to antler cream, Atractylodes macrocephala, and processed ginger, and can be used in cold and damp belt; It can be used with Semen Plantaginis and Cortex Phellodendri, and can be used for damp-heat leukorrhagia. Usage and dosage: decocted, 3 ~ 1g. Appropriate amount for external use. Taboo yin deficiency and blood heat should not be taken. Processing method: remove impurities, wash with water, soak, remove and moisten thoroughly, until the skin has no greasy feeling, moisten again, and slice and dry. Physiological characteristics often grow in forests, forest margins, streams, shrubs and valleys. Angelica dahurica has strong adaptability, is cold-resistant, likes mild and humid climate, and is cultivated in sunny and sunny environments all over China. Angelica dahurica is a deep-rooted fertilizer-loving plant, which is planted in sandy loam with deep soil layer, loose and fertile soil layer, moist and good drainage. When planted in clay, sandy soil and shallow soil, the main root is small and forked, and it is not suitable for cultivation in saline-alkali land and continuous cropping. After being pumped and stored, the root of Angelica dahurica becomes hollow and decays, so it can't be used as medicine. In winter, if the soil is dry and frozen, the seedlings are easy to freeze to death, but if the soil is wet, the seedlings can tolerate the low temperature of-6 ~-8℃. In too cold mountains or shady places, the growth is not good. Location: It is mainly produced in northeast China and North China, and it is cultivated for medicine in northern provinces of China. Related discussion 1 "Compendium": "Angelica dahurica, white and pungent in color, walking with Yangming; Warm and thick-natured, walking with foot Yangming; The fragrance reaches the upper reaches and enters the Taiyin lung meridian. Such as head, eyes, eyebrows and teeth diseases, wind and heat in three meridians; Such as leakage, leukorrhagia, carbuncle and other diseases, the damp heat of the three meridians; Wind-heat is pungent to disperse it, and damp-heat is warm to remove it. It is the main medicine of Yangming, so it can treat hematopathy and fetal diseases, and expel pus and promote granulation to relieve pain. Treat nasal sinusitis, toothache, bleeding in urine, eyebrow and bone pain, secret wind in large intestine, dizziness and nausea in women; Solve poison, snake wound, epistaxis, knife and arrow golden sore. " 2 "Materia Medica Seeking Truth": "Radix Angelicae Dahuricae, with strong air temperature, is the main drug for expelling wind and eliminating dampness in the meridian of Foot Yangming. Therefore, it can cure all the head and face diseases of Yangming, such as faint pain in the head, bone pain in the eyebrows, bone pain in the gums and black scars on the face. And its wind and heat take the lung, which is bright in the brain and seeps into the deep nose; Moving to the large intestine, it becomes bloody collapse and blood stasis, intestinal wind, hemorrhoids, fistula and gangrene; Wind and damp heat, occurring in the skin, turn into sores and dry itching; All of them can warm and dispel the stagnation, so that the wind of phlegm can be removed, and the swelling and swelling of the remaining knot can be eliminated. It is sincere to dispel the wind and dispel the dampness. " 3 "Materia Medica Justice": "Angelica dahurica, the smell is pungent and warm, the fragrance is very special, and it can dry and wet the most. The so-called person who grows skin and moistens color in Benjing means warming and nourishing. At first, it doesn't mean that treating external selection can promote muscle growth and flesh growth. It is Daming Materia Medica that treats breast carbuncle, hair back, scrofula, hemorrhoids and fistula, scabies and scabies, which is called breaking blood, generating new blood, expelling pus and relieving pain. Jiegu is also called to treat wind, numbness, dryness and itching of the skin on the head and face. It is called white and pungent in color, warm and thick in gas, and Yangming is the main medicine. The carbuncle is Yangming damp-heat, and the damp-heat is warmed to remove it, so it can expel pus and promote granulation and relieve pain. H refers to the product with rising acrimony and temperature, which can cure cold and dampness, but not damp and heat. Ulcer is a disease, and nine out of ten people with damp and heat are more than enough, and one out of ten people with cold and dampness are less than enough. Hu can rule carbuncle, carrying faggots to put out a fire. "