Yam powder taken together with Poria powder has certain effects of strengthening the spleen and dispelling dampness (by tonifying the spleen to make the dampness discharged), and can be used to regulate the stomach and intestines. Yam powder is a processed product of yam, which is sweet in taste and flat in nature, and belongs to the spleen, lung and kidney meridians. It has the effects of tonifying the spleen and nourishing the stomach, generating fluids and benefiting the lungs, tonifying the kidneys and astringing the vital essence. It is forbidden to be taken by those who are full of dampness (too much dampness causing fullness and discomfort in the spleen and stomach) or those who have solid evils or accumulation of stagnation. Poria powder is a processed product of Poria, Poria is sweet and light in flavor, flat in nature, belonging to the heart, lung, spleen and kidney meridians, it has the effect of inducing water and seepage of dampness (to promote the operation of water to get rid of dampness), strengthening the spleen, and nourishing the heart, and it can be used to treat oedema with little urine, phlegm-drinking vertigo and palpitations (vertigo due to phlegm-drinking evils, with fast heartbeat, often accompanied by panic), deficiency of the spleen with little food and restlessness of the heart and mind. Caution should be exercised if there is deficiency of yin without dampness-heat, deficiency of cold and essence-slip, or deficiency of qi and subsidence. Yam powder taken together with Poria powder has certain effects of strengthening the spleen and dispelling dampness, and can be used to treat spleen deficiency with little food and other symptoms. It is recommended to use under the guidance of a professional Chinese medicine doctor, do not blindly use drugs.