There is no such thing as the best diuretic medicine to reduce edema. Poria, zedoary, coix seed, etc. can be diuretic to reduce edema. 1. Poria: Poria has the efficacy of diuretic and edema (facilitating urination, eliminating edema), seeping dampness, strengthening the spleen and tranquilizing the heart. It is used for treating edema, phlegm (pathological products formed by impaired metabolism of water and fluid), diarrhea due to spleen deficiency (diarrhea caused by a weak spleen), palpitations (rapid heartbeat, often accompanied by panic), and insomnia. Yin deficiency without dampness-heat, deficiency of cold and essence of slippery, qi deficiency and subsidence should be taken with caution. 2. Zedoary: It has the effect of inducing diuresis and seepage of dampness (promoting the operation of water to get rid of dampness), draining heat, resolving turbidity and lowering lipids (clearing the body of impurities and reducing excess body fat). It is used for treating dysuria (unsmooth urination), edema and distension, diarrhea and urination, phlegm and dizziness. Kidney deficiency slippery semen, no dampness and heat is prohibited. 3. Job’s tears: has the effect of diuresis, dampness, spleen and diarrhea. The main treatment for edema, foot fungus, urinary incontinence, diarrhea in spleen deficiency, dampness paralysis, lung carbuncle, intestinal carbuncle (carbuncle in the intestines and bowels, with fever, right abdominal pain, can be felt as a lump for the manifestation of) and so on. Pregnant women are advised to use with caution. If there is a need for medication, it should be used under the guidance of a doctor’s diagnosis, and should not be used blindly on its own to avoid adverse consequences.