According to laboratory analysis, chlorogenic acid is the main component in the stems, leaves and flowers of Lonicera japonica Thunb. Chlorogenic acid has antibacterial and anti-inflammatory effects in clinic. In addition, flowers contain inositol, saponins, volatile oil, flavonoids and so on. The leaves contain tannin, honeysuckle glycoside, strychnine, syringin and honeysuckle yellow. The stem and stem bark contain luteolin, saponin and pure cellulose. Fruit contains reducing sugar. Modern medical research has proved that honeysuckle has strong antibacterial activity against streptococcus sanguis, staphylococcus aureus, typhoid bacillus, dysentery bacillus, Escherichia coli, Pseudomonas aeruginosa, diplococcus pneumoniae, Bordetella pertussis and meningococcus. Has certain curative effect on influenza and inflammation. Honeysuckle can be used alone or in combination with other drugs, or made into pills, soaked in wine, taken orally or externally, with good results. Honeysuckle is widely used in pharmaceutical preparations. According to the survey, one third of Chinese traditional medicine prescriptions use honeysuckle. The well-known "Yinqiao Jiedu Pill" and "Yinhuang Oral Liquid" are both made of honeysuckle as the main raw material. Taking honeysuckle as the main medicine, forsythia suspensa, Folium Isatidis, Rhizoma Phragmitis and Glycyrrhrizae Radix, and decocting with water instead of tea, can prevent Japanese encephalitis and meningitis.