The invention relates to the field of traditional Chinese medicine, in particular to a traditional Chinese medicine foot soaping liquid for treating diabetes, and solves the problems that the traditional method for treating diabetes by orally taking drugs and injecting insulin has serious toxic side effect and bad curative effect and easily causes complicating disease and drug resistance. The liquid is composed of 14 drugs including leech, muskiness, chicken-bone herb, pericarpium zanthoxyli, red paeonia, mugwort leaf, radix aconiti, Guilu Erxian Jiao, prepared rhizome of rehmannia, Dioscoreaopposita, cortex moutan, ginseng, polygonatum and the like. The drugs are soaked and then concentrated under normal pressure and concentrated under vacuum by a traditional Chinese medicine vacuum extracting machine set for extracting liquid medicines, and then the liquid medicine is made into a drug for external use preferably by a plenty of Chinese herbal medicines and by a special modern processing method in accordance with theory of traditional Chinese medicine. The drug is used in a foot soaking manner and a footherapy manner for treatment, and the drug has the functions, for human body, of soothing the liver and controlling breathing, promoting the production of body fluid to quench thirst, recovering glucose metabolism, balancing blood sugar, decreasing blood fat, promoting insulin secretion and keeping the blood sugar stable for a long time, and can enhance the immunity of the organism and avoid all defects of traditional oral drugs.