Scolopendra is a medicine for calming the liver and calming the wind, which has the effects of calming the wind, relieving spasm, attacking toxin and resolving hard mass, dredging collaterals and relieving pain. Generally, it is decocted with 1~3g, ground and swallowed with 0.6~ 1g each time. It can be used for the treatment of rheumatic joint pain, and can also be combined with wind-dispelling, dampness-removing and collateral-dredging drugs such as Radix Saposhnikoviae, Radix Angelicae Pubescentis and Radix Clematidis. It is often used with scorpion to treat meridian spasm, tetanus and mouth-eye deviation in wind. For intractable headache, it is often combined with Gastrodia elata, Chuanxiong, Bombyx Batryticatus and rhubarb.

Scolopendra has certain anticonvulsant effect, and is beneficial to the liver, and can treat infantile convulsion, redness and heat pain. It can dredge veins, treat spasms and convulsions, and treat intractable headache, tetanus, stroke and other symptoms. Scolopendra can improve the phagocytosis of macrophages and help to regulate immune function. Unsaturated fatty acids can resist inflammation and inhibit capillary permeability and edema. It has certain inhibitory effect on mycobacterium tuberculosis and fungi.

Water centipede, perennial herb, clustered. The whole plant is smooth and hairless, and it smells like calamus when fresh. The roots are weak, and the runner lies flat on the ground; It looks like a centipede, with many nodes, many fibrous roots under each node, and a small seedling on each node. The stems are scattered in rows, slender, 7 ~ 20 cm high, oblate and smooth. The leaves are narrow and linear, 2 ~ 4 mm wide, with sheaths at the base of the stem, and the two sheaths at the bottom are dry films. In summer, a spherical, yellow-green flower head emerges from the top of the stem, with a large number of dense spikelets and three leaflike bracts folded down, so it is also called "triangle grass", with membranous scales and wingless keel-like protrusions on its back. Nuts are ovoid and tiny. The culms are scattered in rows, thin, 7-20 cm high, oblate and triangular, smooth, with 4-5 cylindrical leaf sheaths. The two leaf sheaths at the bottom are usually dry and brown, with oblique leaf sheaths and conical top. The top two or three leaf sheaths have leaves. Leaves weak, shorter than or slightly longer than culm, 2-4 mm wide, flat, with thorns on upper edge and back edge. There are 3 leaflike bracts, which are extremely swollen and often fold down in the later stage; Spikes are single, rarely 2 or 3, spherical or ovoid, 5- 1 1 mm long and 4.5- 10 mm wide, with many dense spikelets. Spikelets are oblong-lanceolate or lanceolate, flat, about 3 mm long and 0.8- 1 mm wide, with 1 flower; The scales are membranous, 2.8-3 mm long, and the scales below are shorter than those above, white, rusty and less straw yellow. The back keel is green and prickly, and the top extends into a short point that bends outward, with 5-7 veins. Stamens 3- 1, anthers linear; Style slender, stigma 2, not as long as 1/2 of style. Nutlets are obovate and oblong, oblate and biconvex, about 1/2 of scales, with dense fine spots on the surface. The flowering and fruiting period is from May to September. Perennial herbs, clustered, warm in nature and pungent in taste, can be used as medicine.