Lower limb ulcers in Chinese medicine are called polycarbonate ulcers, which mainly include internal and external treatments. 1. Internal treatment (1) Damp-heat injection: manifested as lower limb ulcers, redness, swelling, pus dripping, accompanied by thirst, constipation, yellowish greasy moss, slippery pulse, using Ermiao Pill and Wu Shen Tang. Its adverse reactions and contraindications are not clear at present. (2) Qi deficiency and blood stasis: manifested as lower limb ulcers with pale, pale sores, heavy limbs, tiredness, pale tongue with petechiae, and thin, astringent and feeble pulse; use tonifying Yang Huiwu Tang combined with Si Miao Tang; its adverse effects and contraindications are not clear at present. 2. External treatment: in the early stage of local redness and swelling, with small amount of ooze, Jin Huang Cream can be used. In the later stage, if it is not closed for a long time, the skin is black and the rotting flesh does not come off, it can be used Shengmiao Yuhong Cream. If you suffer from lower limb ulcers, you should consult the clinician and follow the doctor’s instructions for treatment, do not take medication without authorization, so as not to delay the condition.