Banlangen is a commonly used herb, the price of Banlangen is usually around 8.5 yuan per pound, it has a high medicinal value. It has the function of clearing heat and detoxifying, cooling blood and eliminating swelling. It can be used to treat the symptoms of plague caused by dancers, redness and swelling of the head and face, and unfavorable throat. It can also detoxify the pharynx. It is bitter-cold, enters the heart and stomach meridians, is good at clearing real heat and fire poison, and is known for detoxifying the pharynx and dispersing nodules. It can be used to treat fever, headache, sore throat and other uncomfortable symptoms caused by external wind-heat. In addition, it can also be used as an antibacterial and anti-inflammatory agent. It has a broad-spectrum antibacterial effect on Staphylococcus aureus, Streptococcus pneumoniae, Streptococcus aureus and Streptococcus influenzae, and should be used with caution by those who are allergic to it or have a cold spleen and stomach.