Poria powder can diuretic and seepage dampness (promote the operation of water to dispel dampness), strengthen the spleen and tranquilize the heart. Poria powder is the powder of Poria, with the same efficacy, main treatment and contraindication as Poria. Poria is sweet and light in flavor, and flat in nature. It belongs to heart, lung, spleen and kidney meridians. Clinically, it is often used in the treatment of edema, low urine output, dizziness, palpitations (rapid heartbeat, often accompanied by panic) and insomnia caused by a deficiency of the spleen, such as too little food and drink, diarrhea, restlessness of the heart and mind, palpitations (rapid heartbeat for no apparent reason), etc. It is also used in the treatment of diarrhea and insomnia. Poria should not be taken by those with yin deficiency without dampness-heat, deficiency of cold, or those with qi deficiency and subsidence. Apart from this, Poria should not be taken by those with kidney deficiency, those with incomplete urination, and those with deficiency of cold and slippery spermatozoa. Adverse effects are not clear. It is recommended that patients in need of treatment should consult a doctor in a timely manner and take medication under the doctor’s diagnosis and treatment.