Sea powder, also known as red sea powder, is the egg cluster band of the blue-backed anal sea hare, family Hareidae, which is both edible and medicinal. It is salty and cold in taste, enters both lung and kidney meridians, has the effect of clearing heat and nourishing yin, eliminating phlegm and softening hardness, and can treat asthma and cough caused by lung dryness, as well as gall tumors and scrofula. In addition, it has the effect of cooling the blood and stopping bleeding, and can be used to treat epistaxis and eye inflammation. Modern pharmacological studies have found that sea powder can be anti-bacterial, anti-viral and anti-tumor, and has a significant inhibitory effect on the central nervous system. In terms of treatment, sea powder can be combined with aromatic herbs and taken with ginger juice to relieve chest paralysis and heart pain, and taken as a powder with monkshood, tribulus terrestris, and pennyroyal to alleviate symptoms such as chancre, etc. Remember that sea powder should not be taken with licorice and should not be taken by people with spleen deficiency.