There is a difference between Fahanxia and Jiang Hanxia in terms of concocting method, efficacy and main treatment. Fahanxia is made of quicklime and licorice, and its efficacy favors phlegm dissolution, and it is mostly used in the treatment of spleen deficiency and phlegm-dampness (the function of the spleen is weak, which leads to phlegm and dampness that can’t be eliminated) obstruction; Jiang hanxia is made of ginger and alum, and it has stronger effect of subduing retrogression and preventing vomiting (preventing upward gastric qi, stopping vomiting), and it is mostly used in cold phlegm vomiting and retrogression, and other cases. 1. Concocting method: Both are the concocted products of Semenxia japonica, Semenxia japonica is concocted by quicklime and licorice; Semenxia japonica is concocted by ginger and alum. 2. Efficacy: Both of them have the effect of drying dampness and removing phlegm (removing phlegm from the body by drying dampness) of Radix et Rhizoma Pinelliae, on the basis of which, Radix et Rhizoma Pinelliae is supplemented with licorice to clear away heat and remove phlegm, while Radix et Rhizoma Pinelliae is supplemented with ginger to lower the rebelliousness and stop vomiting. 3. Indications: Fa Han Xia is mainly used for the evidence of spleen deficiency and phlegm-dampness obstruction, which has a therapeutic effect on the clinical symptoms of dizziness, dizziness, heavy limbs, etc. Jiang Han Xia is mainly used for the evidence of cold phlegm vomiting and retching, and the application of it is more effective for the symptoms of vomiting, eructation (hiccups) caused by phlegm-drinking (pathological products formed by the impaired metabolism of fluids and liquids). The above is the distinction between Fa Xianxia and Jiang Xianxia, clinical need to be applied under the guidance of a doctor to identify the evidence, do not take medication to delay the condition.