Ginger soup is a single decoction of ginger or decoction with brown sugar and scallion, which can be used to dispel wind and cold (to get rid of wind and dispel cold), and perspiration to relieve cold (to relieve the evil on the surface of the body through sweating), but the effect is weak, and it is suitable for light cases of wind-cold colds. Ginger has the effect of dispelling cold (removing cold from the surface of the body), warming and stopping vomiting (treating vomiting caused by stomach cold by warming the spleen and stomach), resolving phlegm and relieving cough, which can be used for cold in the middle jiao or spleen and stomach (spleen and stomach weak and cold) of the gastric and epigastric coldness and pain, vomiting, and eating less; treating cold phlegm and cough; and relieving fish and crab poison, etc. However, it is mostly used as an auxiliary medicine. However, it is mostly used as an adjunctive medicine and should be combined with other medicines under the guidance of the doctor’s diagnosis. For example, for the treatment of cold stomach and vomiting, it can be combined with nutmeg, galangal, etc. to warm the stomach and stop vomiting; if the stomach is hot and vomiting, it can be combined with loquat leaves, bamboo, Huanglian, etc. to clear the stomach and stop vomiting; if phlegm and drink (water metabolism disorders in the formation of the products of the pathology) vomiting, it is often combined with the half-summer, i.e., Xiaobansha Tang. Ginger soup is suitable for mild cases of wind-cold flu because ginger is decocted alone or combined with brown sugar and scallion, etc., and its effect of sweating and dispelling wind is weaker than that of expelling wind and dispelling surface. Ginger can help the fire to hurt the yin, yin deficiency and internal heat and solid heat should not be taken. It is recommended to take ginger soup under the guidance of a doctor.