Flying lotus herb, also known as tree hugging lotus, has the effect of reducing swelling and dispersing knots, clearing heat and detoxification (removing heat and toxicity from the body), stopping bleeding, and is often used in the treatment of lymph node inflammation, jaundice with damp-heat, mumps, swollen and painful eyes, bruises, and so on. Flying lotus herb belongs to the heat-clearing and detoxifying medicines, belongs to the genus Fern of the family Hydropsychiaceae, and is used as a medicine with the whole herb. Its flavor is sweet, light, cool, into the liver, lung meridian. Internal use can be decocted soup, external use of fresh grass appropriate amount, mashed compress wound. Flying lotus herb is cool in nature, so it should be used with caution for people with cold spleen and stomach (spleen and stomach weakness and cold), and is prohibited for people with a history of allergy. Adverse reactions are not clear. Patients who need it should use it under the guidance of professional Chinese medicine practitioners, and should not use it on their own to avoid adverse effects.