Poria has the effects of diuresis and seepage of dampness (promoting the flow of water to get rid of dampness), strengthening the spleen and tranquilizing the heart, and is used in the treatment of edema and urinary incontinence, phlegm-drinking and palpitations (vertigo and palpitations due to phlegm-drinking and evil qi), and deficiency of the spleen with low food intake. Poria is a kind of Chinese herbal medicine with the effects of diuresis and seepage of dampness, strengthening the spleen and tranquilizing the heart, etc. Poria is commonly used in clinical practice for the treatment of oedema and urination, phlegm-drinking and vertigo-palpitations, spleen deficiency with low food intake, loose stools (thin and unshapely stools) and diarrhea, restlessness of the heart and mind, and palpitations and insomnia. Poria should be used with caution to prevent aggravation of Yin deficiency without dampness and heat, deficiency of cold and spermatic slippage, and Qi deficiency and subsidence. It is worth noting that Poria is forbidden to be applied simultaneously with Ampelopsis, Diyu, Gentiana Macrophyllae, Kamehameha, and Xionghuang, etc. During the medication, it is important to avoid taking rice vinegar, so as not to affect the efficacy of Poria. It is recommended that patients follow the doctor’s instructions to identify and treat, not to use Poria indiscriminately, so as not to induce the body to appear uncomfortable symptoms.