Cangzhu is used to strengthen the spleen and dry dampness (strengthening the spleen and dispelling dampness), dispersing cold and dispelling wind; it is used to treat dampness obstruction in the middle Jiao (dampness obstructing the functions of the spleen and stomach), and rheumatism and paralysis. The effects of Hou Pu are to dry dampness and eliminate phlegm, and to lower qi and remove fullness (enabling qi to move downward to relieve distension and discomfort); it is used to treat dampness stagnation in the spleen and stomach, food stagnation (the stagnation of food in the stomach due to indigestion), qi stagnation, and phlegm (a pathological product formed by the impaired metabolism of water and fluid). Cangzhu is pungent in taste and warm in nature, and belongs to the spleen meridian and stomach meridian; it has the effects of strengthening the spleen and drying dampness, dispelling wind and dispersing cold; it can treat abdominal distension and diarrhea caused by dampness stagnation in the middle Jiao, and treat rheumatic joint pain and wind-cold flu. Houpu is bitter in taste and warm in nature, belonging to the spleen and stomach meridian, large intestine meridian and lung meridian, it has the efficacy of drying dampness and eliminating phlegm, and removing fullness of qi, and it is suitable for the vomiting and diarrhea caused by dampness injury to the spleen and stomach, the bloating of stomach and constipation caused by food and qi stagnation, and the treatment of phlegm cough and wheezing. However, pregnant women and patients with qi deficiency and fluid deficiency should be cautious. Cangzhu Houpu need to be used under the guidance of a professional Chinese medicine practitioner, do not use blindly.