Lysimachia christinae is slightly fragrant, light and a little sour. The whole grass is crumpled into a ball, the surface is hairless or sparse, the roots are yellowish and slender, the stems are dark red and twisted with longitudinal stripes, the lower stems sometimes have fibrous roots, the cross section is solid, the middle part is light yellow, the outer ring is dark brown, and the leaves are oval or heart-shaped. After soaking in water, black or brown stripes can be seen under the perspective of light, and few or no flowers can be seen. The specific effects and functions of Lysimachia christinae are as follows:

1, clearing away heat and promoting diuresis: Lysimachia christinae tastes bitter and cold, and enters the bladder and kidney meridians, clearing away damp-heat in bladder and promoting diuresis;

2, expelling wind and relieving pain: "Materia Medica Seeking the Original" pointed out that Lysimachia christinae can dispel wind and remove dampness, stop bone pain, soak in wine can relax muscles and tendons, and treat falls and injuries;

3, diuretic jaundice: mainly suitable for various diseases caused by damp-heat jaundice. Lysimachia christinae not only clears the fire in the liver and gallbladder, but also clears the damp-heat in the lower energizer, and has good curative effect in clearing away heat, promoting diuresis and eliminating jaundice.