1. Aliases

Earthworms, earthworms, earth dragons, wide earth dragons, earthworm pythons, mounds, earthworms, cold worms, earth dragons, and insect bites.
2. Animal morphology
The body is 11-38 centimeters long and 0.5-1.2 centimeters wide, with a pointed front end and a blunt round rear end, consisting of more than 100 segments. The dorsal foramen start from the 11th to 12th segments, with a grayish purple color on the back and a slightly pale color on the back. The pubic ring is located in the 14th to 16th segments, and there are no dorsal foramen or pubic hairs on it. The pubic hairs in the front segments of the ring are thick and hard. The male reproductive foramen are located on a small protrusion on both sides of the ventral surface of Section 18, with shallow skin folds on the outer edge and 1-2 rows of small mastoids on the front and back sides. Two pairs of fertilization sac pores are located on an elliptical protrusion between the 7/8 and 8/9 internodes. The seminal vesicles are spherical in shape, with shorter ducts and shorter blind ducts that bend several times.
3. Origin distribution
Born in damp, loose, and organic rich soil, slow to move. Distributed in Fujian, Guangdong, Guangxi, Taiwan and other places.
4. Harvesting and processing
Capture from spring to autumn. After catching, promptly open the abdomen, wash away internal organs and mud, and dry in the sun or at low temperature.
5. Characteristics of medicinal herbs:
Long strip shaped thin slice, curved, slightly curled edges, 10-20 centimeters long and 1-2 centimeters wide, with segments throughout. The back is brownish to purplish gray, and the abdomen is light yellow brown; The 14th to 16th stages are the reproductive tract, commonly known as the "white neck", which is relatively bright. The front end of the body is slightly pointed, and the tail end is blunt and round. The male reproductive hole is located on a small protrusion on both sides of the ventral surface of Section 18, with 1-2 rows of small mastoids on both sides. Two pairs of fertilization sac pores are located on an elliptical protrusion between the 7/8 and 8/9 internodes. Lightweight, slightly leather like, not easily broken. It has a fishy smell and a slightly salty taste.
6. Nature, taste, and meridian tropism
Cold in nature and salty in taste. Guigan Meridian, Spleen Meridian, and Bladder Meridian.
7. Effect and function
Clearing heat, calming shock, unblocking meridians, relieving asthma, and diuresis. A wind calming and antispasmodic drug belonging to the subcategory of liver calming and wind calming drugs.
8. Clinical applications
Dosage 4.5-9 grams, decoct or put into pill powder; Apply an appropriate amount externally, mash, dissolve water, or grind into powder and apply. Used to treat high fever, dizziness, convulsions, joint pain, limb numbness, hemiplegia, pulmonary fever, cough, urinary edema, and hypertension.
9. Pharmacological research
Has thrombolytic and anticoagulant effects; Has anti arrhythmic effects and inhibits cardiac conduction; It has the effects of partially dilating visceral blood vessels, promoting sodium secretion, diuresis, and reducing triglycerides. Has antipyretic, sedative, and anticonvulsant effects; By blocking histamine receptors, it achieves an anti asthmatic effect, relaxes the smooth muscles of the uterus and intestines, and has a rapid killing effect on sperm; It has a strong inhibitory effect on human tuberculosis bacteria.
10. Chemical composition
Dilong contains hypoxanthine, earthworm antipyretic alkaloids, earthworm extract, and various amino acids, as well as succinic acid. Its extract has a slow and long-lasting antihypertensive effect on most animals; The infusion has an anti asthmatic effect on experimental asthma in guinea pigs; For isolated frog hearts, an appropriate amount can increase heart rate; Animal experiments still have antipyretic, sedative, and anticonvulsant effects; Hypoxanthine is a antihypertensive component and has anti histamine and tracheal dilation effects.
11. Taboos for use
Patients with spleen and stomach deficiency and cold should take it with caution, and pregnant women should not take it. This taste is fishy, and taking it orally can cause vomiting due to juice. It is recommended to mix a small amount of dried tangerine peel with the decoction, or stir fry and grind into powder capsules to reduce this reaction.
12. Compatibility prescription
① Treatment for deafness and gas blockage: 15 grams each of earthworm and Chuanxiong. For the end, take 6 grams of Maimendong soup per serving, then lower your head and fall asleep after taking it. Take it once a night, three nights, and it works. (Saint Francis' Chronicles)
② Treating injuries: White necked earthworms are not limited to how many. Wash off the soil, bake and grind. Take 6 grams of onion and ginger soup per serving, keep your clothes warm, and sweat will heal immediately. It also treats gout. (Compilation of Traumatology)
③ Treating breast abscess: Take one or two pieces of Earthly Dragon, put ginger into a bowl, grind it like mud, apply it on all sides, and stick it with paper flowers. (Puji Fang)
④ Treat mouth ulcers that have already ulcerated and purulent: earthworms, pound fine, apply cold water, change three or four times a day. (Fu Shou Jing Fang)
⑤ Treatment of Dan Poison: Seven medium active earth dragons, one bowl of purple backed duckweed. Grind and apply finely. (Zhi Zhi Fang)
⑥ Treating Wind Red Eyes: 10 Earthly Dragons (Dried). Crush fine Luo into powder. When lying down at night, adjust 6 grams of cold tea. (Shenghui Fang)
⑦ Treatment of nosebleeds: More than ten large earthworms, mashed, well water and diluted, mild and clear drink; If it's heavy, mix it with residue juice and take it. (Ancient and Modern Medical Mirror)
⑧ Treat sore throat redness and swelling to prevent moth infestation: Seven earthworms. Soak in boiling water, let it cool to remove the mud, and drink it with water chestnut juice. ("The Key to Throat" Di Long Yin)