Careless grass, scientific name: Crocodile Mouth Flower, alias Li Qian cone, soft thorn grass, Chinese grass and Saba snake grass. Indonesians call it Sambung nyawa, which means life-saving grass, while Hainan calls it Sam Bung Nyawa. Sweet, pungent, slightly bitter, flat in nature, liver and kidney meridians entered. It is a wild shrub-like herb, which grows in low-altitude sparse forests near the equator or wet sandy soil in shrubs, and its maturity period is generally 3-9 months. It is a kind of wild vegetable with high nutritional value and non-toxicity, and it is a green agricultural product with high amino acid and chlorophyll content. According to the test results, Eupatorium adenophorum is non-toxic and contains lupeol, betulin, pentacyclic triterpenes, β sitosterol, calcium and flavonoids.

The whole herb has the functions of clearing away heat and toxic materials, removing blood stasis and swelling, diminishing inflammation and relieving alcoholism, and preventing and treating cancer. It can improve systemic blood flow, enhance myocardial contractility and improve blood pressure. It is rich in protein and has high nutritional value. Traditionally, it is used to treat nephritis, renal atrophy, renal failure and kidney calculi's diseases, and it is the savior of patients with kidney disease. It can also treat sore throat, hepatitis, jaundice, dermatosis, hypertension, hyperglycemia, hyperlipidemia, gastritis, rheumatism and joint pain, and has a good therapeutic effect on various cancers.

Eupatorium adenophorum is a famous Chinese herbal medicine plant in Southeast Asian countries and Thailand, which is often used to treat many diseases. Many pharmacodynamic studies have proved that Eupatorium adenophorum has its unique function in resisting herpes simplex virus. Clinical application of Lysimachia christinae in treating genital herpes and herpes zoster has also achieved good results, and the clinical effect is good.