The efficacy and effect of Hou Pu is to dry dampness, eliminate phlegm, and lower qi to remove fullness (to enable qi to move downward to alleviate the discomfort of flatulence); the efficacy and effect of Dry Ginger is to warm the middle Jiao and disperse cold (to dispel cold evils by warming the spleen and stomach), return yang to open the veins, and warm the lungs to dissolve fluid (to promote the flow of stagnant fluid by warming the lungs). Hou Pu is clinically used for dampness stagnation, vomiting and diarrhea, food stagnation (accumulation of food in the stomach due to indigestion), gas stagnation, abdominal distension and constipation, and phlegm and drink (pathological products of impaired metabolism of water and fluid) and wheezing and coughing. In the treatment of gastrointestinal stagnation caused by constipation and bloating, often used with rhubarb, Citrus aurantium, in the treatment of constipation of heat knot, often used with rhubarb, manganese, Citrus aurantium. Houpu is warm and pungent, easy to consume gas and injure fluid, so be careful when you are weak and pregnant. Ginger is mainly used in the treatment of cold pain in the stomach and abdomen (stomach and abdomen feel cold pain), vomiting and diarrhea, cold limbs, cold pulse, cold drink cough. In the treatment of coldness of spleen and stomach, it can be used together with Radix Codonopsis, Rhizoma Atractylodis Macrocephalae, Poria; in the treatment of pain in the stomach and abdomen caused by coldness, it can be used alone or together with Radix Gaultheriae Praeparatae; for the death of yang, it can be used together with Radix Pseudostellariae; in the treatment of cough and cough caused by cold drink, cold form, cold back and cold body, and sputum, it is often used together with Sinapis, Schizandrae chinensis, and Fructus Schisandrae chinensis. Dried ginger is pungent, hot and dry, and is contraindicated for people with Yin deficiency and internal heat, and people with blood-heat delusion, and should not eat cold, raw and cold food during the period of using the medicine. The drug should be used under the guidance of a physician, do not self-medicate.