If edema is caused by hypertension, either Wu Ling San or Yin Chen Wu Ling San can treat edema, and the choice should be made according to the function of the formula. 1. The efficacy of Wu Ling San is to diuretic and seepage dampness (promoting the flow of water to get rid of dampness), and to warm Yang and transform Qi (warming Yang Qi in the body). Clinically, it can be used to treat water retention in the solar bladder (a type of syndrome manifesting as unsmooth urination, bloating of the abdomen, thirst for water and vomiting after drinking, etc.), and edema in which water-dampness is internally retained (water-dampness stays in the body). Its composition includes poria, zedoary, atractylodes and other herbs. 2. The efficacy of Yin Chen Wu Ling San is to relieve dampness and reduce yellowish color, which can be used to treat dampness-heat in the liver and gallbladder (dampness-heat evils accumulated in the liver and gallbladder), dampness-heat jaundice caused by stagnation of the lungs and spleen, and dysuria (unruly urination). Its composition includes Yin Chen, Ze Xie Di, Poria and other traditional Chinese medicines. The adverse effects and contraindications of the drug are not clear, if there is any discomfort you need to consult the relevant departments and under the guidance of a doctor for standardized treatment to avoid delay.