There is no difference between dilong and earthworm, they are the same kind of herbal medicine.
There is no difference between Dilong and earthworm in essence. Dilong can be made by washing earthworms with warm water to remove mucus and then stirring them in grass ash, wood chips or rice bran, then cutting open the abdomen, washing away the viscera and sediment, and drying them in the sun or at low temperature.
Dilong is cold in nature, salty in taste, and has the effects of quenching wind and stopping spasm, promoting collaterals and calming asthma. Clinically, Dilong can be used to treat a variety of diseases such as lung-heat cough and asthma, sore throat, liver-yang headache, eye redness, swelling and pain, and urinary incontinence (dysuria), which is a kind of Chinese herbal medicine with excellent medicinal properties. However, Di Long should not be used by patients with cold spleen and stomach, and pregnant women are also prohibited from taking Di Long.
How to use Dilong correctly needs the guidance of a professional Chinese medicine practitioner, otherwise improper use of the medicine will not only not benefit the condition, but may also damage the organism.