The invention provides an external medicine for treating foot corns. The external medicine for treating the foot corns is prepared from the following traditional Chinese medicine raw materials: Oldenlandia diffusa, bezoar, szechwan Chinaberry fruit, water chestnut, golden cypress, radix angelicae, semen raphani, ginkgo bark, common andrographis Herb, lithargite, salvia chinensis, semen litchi, radix paeoniae rubra, Houttuynia cordata, folium artemisiae argyi, purslane, ginger, fiveleaf akebia fruit, radix stemonae, cortex lycii radices, safflower carthamus, castor bean, Chinese Pulsatilla Root, cinnabar, rhizoma smilacis glabrae, herba epimedii, Brucea javanica, smoked plum, frankincense, Paniculate Swallowwort Root, wild impatiens balsamina and ramulus acacia. The external medicine for treating the foot corns is scientific and reasonable in medicine use, and the traditional Chinese medicine theory is inherited. The external medicine for treating the foot corns has the beneficial effects that the raw materials can be easily got; the cost is low; a treatment effect is good; the foot corns cannot easily relapse; no side effects are generated; toxin can be eliminated, inflammations can be diminished, bacteria can be killed; skin cells can be repaired and reactivated to promote skin microcirculation to enable skins to be fine and smooth, and finally, an effect of treating both principal and secondary aspects of the disease is achieved, and the pain of a patient is greatly relieved.