Dry gangrene of diabetic foot is a western medical name, which belongs to the category of “gangrene of tendon” and “gangrene” in Chinese medicine. Physicians need to use medicines according to the patient’s condition. For the case of blood stasis, Tao Hong Si Wu Tang is used; for the case of heat and toxicity injuring the yin, Gu Bu Tang is used; for the case of deficiency of qi and yin, Huang Qi and Bei Jia Tang is used. Dry gangrene of diabetic foot is secondary to thirst-quenching disease (i.e. diabetes mellitus in western medicine). The main symptoms are pale and cold skin on the feet, black deposits of different sizes and shapes on the toes, and some of them are painful, often occurring on the dorsal side of the feet and toes. For blood stasis, Tao Hong Si Wu Tang is used to activate blood circulation and remove blood stasis, and to open the channels and relieve pain; for heat and toxicity injury to yin, Gu Bu Tang is used to clear heat and detoxify the toxin and nourish yin and activate blood; and for deficiency of both qi and yin, Astragalus and turtle turtle shells Tang is used to benefit the qi and nourish the yin. If you suffer from dry gangrene of diabetic foot, it is recommended to consult a doctor in time for comprehensive treatment. Medications should be used under the guidance of a physician.