Sweet grass seedlings have the functions of invigorating spleen and nourishing blood, giving priority to relieving pain, relieving cough and resolving phlegm, clearing away heat and removing fire, and compatibility of various drugs. Sweet grass seedlings, also known as Prunella vulgaris, Lao Guo and Sweet Root, are perennial woody plants of Leguminosae and Glycyrrhiza, and are nourishing Chinese herbal medicines. The medicinal parts are roots and underground stems. Can be used for treating stomachache, abdominal pain, acute gastrocnemius contracture pain, etc. Often used together with Paeonia lactiflora, such as Paeonia lactiflora and Glycyrrhiza decoction, can obviously improve the curative effect of treating acute contracture pain.

It can be used to treat carbuncle, intestinal carbuncle, sore throat, and damp pathogen, and has antibacterial and anti-inflammatory effects, and can also be used to reduce the detoxification effect of other Chinese herbal medicines. It can be used for blending drugs with the strongest properties, such as Tiaowei Chengqi Decoction, to reduce the purgative effect of Rhizoma Coptidis and mirabilite and their stimulation to digestive tract. At the same time, it is common to mix various drugs in many prescriptions. The epidermis is tight and loose, the surface layer is brownish red or grayish brown, the underground stem is cylindrical, the surface layer has bud marks, and the middle of the cross section has marrow, which is sweet and unique. It is mainly used for relieving cough and resolving phlegm, clearing away heat, and relieving epigastric pain.

Sweet grass seedlings love to grow and develop in dark, humid and cold conditions, with dry climate, long sunshine and low temperature. Strengthening spleen and nourishing blood: Sweet grass is flat in nature and pungent in taste, belonging to the twelve meridians. It can strengthen the spleen and nourish blood, nourish and relieve cough, moisten the lungs and relieve cough, and give priority to detoxification, and it is mixed with hundreds of drugs. Bacteriostasis and detumescence: Flavonoids and polysaccharides in sweet grass have antibacterial, heat-clearing and detoxicating effects, and have a good effect on promoting the dissipation of inflammation and improving respiratory inflammatory diseases. Clearing heat and removing fire: the underground stems and leaves of sweet grass contain triterpenoid saponins.

Medicinal use can reduce the redness and swelling of the human body, remove all kinds of inflammation in the human body, eliminate excess water in the body, and have the effect of clearing heat and removing fire. Because Prunella vulgaris is a common Chinese herbal medicine with great demand, with the continuous development and design of Chinese herbal medicine and the prevalence of Chinese herbal medicine industry chain, the production and manufacture of Prunella vulgaris has developed rapidly in many areas of China. Farmers can get great economic benefits by learning to plant licorice, which is a very good way to start a business and get rich.