土当归，中药名。为伞形科当归属植物大独活AngelicagigasNakai的根。植物大独活，分布于我国东北各省，朝鲜、日本也有分布。具有除风和血，辛散温痛之功效。主治关节肿痛，闪挫。
Tu-dang-gui, name of Chinese Medicinal Material. the root of Angelica gigas Nakai, a plant belonging to the family Umbelliferae. Angelica gigas is distributed in various provinces in northeastern China, as well as in Korea and Japan. It has the functions of dispelling wind and promoting blood circulation, and dispersing cold and relieving pain. It is mainly used to treat joint swelling and pain, as well as traumatic injuries.

功效作用 功能
Efficacy and Functions

除风和血，辛散温痛。主治
Expel wind and invigorate blood, dispersing cold and alleviating pain. Mainly used for...

关节肿痛，闪挫。用法用量
Joint swelling and pain, aggravated by sudden movements. Dosage and administration.

内服：煎汤，9～15g。外用：适量，煎水洗。注意事项
Internal use: Decoction, 9-15g. External use: appropriate amount, decoct with water for washing. Precautions.

湿阻中满、大便溏泄者慎服。相关论述
Patients with dampness obstruction and fullness in the middle, as well as those with loose stools, should be cautious when taking this medication.

《吉林中草药》：“除风和血。治关节痛、闪挫。”“治闪挫肿毒：土当归一两，荆芥一两，葱白五枚。煎汤洗患处。”“治关节肿毒：土当归五钱，黄柏四钱。苍术五钱。水煎，口服二次。”临床应用 相关配伍
"Jilin Traditional Chinese Medicine": "Dispels wind and invigorates blood. Treats joint pain and sprains." "Treatment for sprains with swelling and toxicity: 1 liang of Chinese Angelica, 1 liang of Herba Schizonepetae, 5 scallion whites. Decoction for washing the affected area." "Treatment for joint swelling and toxicity: 5 qian of Chinese Angelica, 4 qian of Cortex Phellodendri, 5 qian of Rhizoma Atractylodis. Decoction, oral administration twice." Clinical application and relevant compatibility.

治关节肿毒，土当归五钱，黄柏四钱。苍术五钱。水煎，口服二次。（《吉林中草药》）植物学信息 植物种属
To treat joint swelling and toxicity, use 15 grams of Angelica sinensis, 12 grams of Phellodendron chinense, and 15 grams of Atractylodes lancea. Decoct in water and take orally twice a day. (From "Jilin Chinese Herbal Medicine") Botanical information: Plant species.

伞形科当归属植物大独活。形态特征
Umbelliferae belongs to the plant Angelica sinensis. Morphological characteristics.

大独活，别名朝鲜当归，多年生高大草本，高1～2米。根颈粗短；根圆锥形，径2～5厘米，有支根数个，灰褐色，茎粗壮，中空，紫色，径1.5～5厘米，无毛，有纵深沟纹。叶二至三回三出式羽状分裂，基生叶及茎下部叶的叶柄长达30厘米；叶片轮廓近三角形，长20～40厘米，宽20～30厘米，叶轴不呈翅状下延；茎中部叶的叶柄长近20厘米，叶柄基部渐成抱茎的狭鞘；末回裂片长圆状披针形，长4～15厘米，宽1.5～5厘米，基部楔形，有时具缺刻状裂片，顶端尖或渐尖，边缘有不整齐的锐尖锯齿或重锯齿，幼时两面脉上有毛，老时多脱落；上部的叶简化成囊状膨大的叶鞘，顶端有细裂的叶片，外面紫色，无毛。复伞形花序近球形，花序梗、伞辐和花柄均有短糙毛，花序梗长2～6厘米，伞辐20～45，长2～3厘米；总苞片1至数片，膨大成囊状，深紫色，花蕾期包裹着花序，呈球形；小伞形花序密集成小的球形；小总苞数片，卵状披针形，紫色、膜质，无毛；花柄长3～8毫米；萼齿不明显；花瓣倒卵形，深紫色，顶端凹陷内曲；雄蕊暗紫色，花柱短，与短圆锥状的花柱基近等长。果实卵圆形，幼时紫红色，成熟后黄褐色，长5～8毫米，宽3～5毫米，无毛，背棱隆起，肋状，侧棱翅状，与果体近等宽，每棱槽内有油管1～2，合生面油管2～4。花期7～9月，果期8～10月。分布区域
Duhuo, also known as Korean Angelica, is a tall perennial herbaceous plant, reaching a height of 1-2 meters. It has a thick and short neck at the root; the root is conical, with a diameter of 2-5 centimeters, and several lateral roots, gray-brown in color. The stem is stout, hollow, purple, with a diameter of 1.5-5 centimeters, smooth, and with longitudinal deep grooves. The leaves are twice to thrice ternately compound, with basal and lower stem leaves having petioles up to 30 centimeters long; leaf blades are nearly triangular in outline, 20-40 centimeters long, 20-30 centimeters wide, with the leaf axis not winged downward; the petioles of the middle stem leaves are nearly 20 centimeters long, with the base gradually forming a narrow sheath around the stem; the terminal lobes are lanceolate, 4-15 centimeters long, 1.5-5 centimeters wide, with a wedge-shaped base, sometimes with lobes resembling notches, pointed or gradually pointed at the tip, with irregular sharp serrations or heavy serrations on the edges, hairy on both sides in youth, mostly shed in old age; the upper leaves are simplified into pouch-like enlarged leaf sheaths, with finely lobed leaflets at the top, purple on the outside, and smooth. The compound umbel inflorescence is nearly spherical, with short rough hairs on the inflorescence stalk, umbel rays, and pedicels, the inflorescence stalk is 2-6 centimeters long, with 20-45 rays, each 2-3 centimeters long; there are 1 to several bracts, enlarged into pouches, deep purple, enveloping the inflorescence during the bud stage, forming a spherical shape; the small umbel inflorescences are densely clustered into small spheres; the small bracts are several, ovate-lanceolate, purple, membranous, and smooth; the pedicels are 3-8 millimeters long; the calyx teeth are not prominent; the petals are inverted-ovate, deep purple, with a concave inner tip; the stamens are dark purple, the styles are short, and nearly equal in length to the short conical stigma base. The fruit is ovoid, purplish-red when young, turning yellow-brown when ripe, 5-8 millimeters long, 3-5 millimeters wide, smooth, with raised dorsal ridges, ribbed, with wing-like lateral ridges, nearly as wide as the fruit body, with 1-2 oil ducts in each groove, and 2-4 oil ducts on the combined surface. The flowering period is from July to September, and the fruiting period is from August to October. Distribution area: [missing information].

分布于我国东北各省，朝鲜、日本也有分布。生长环境
Distributed in various provinces in northeastern China, as well as in North Korea and Japan. Growing environment.

生于海拔1000米以上的高山坡，长于沟旁、林缘和林下、喜富含沙石质的土壤。
Born on mountain slopes above 1000 meters above sea level, it grows near ditches, at the edge of forests, and under forests, preferring soil rich in sand and stones.