The invention provides an external medicine for treating tinea manuum and athlete's foot, which is a liniment prepared by immersing solomonseal, kuhseng, broom cypress fruit, cnidium fruit, stemona root, yellow-corktree bark, cotex dictamni, ageratum and dandelion in mature vinegar for 7 to 15 days, sterilizing and sealed-packaging the filtrate. The medicine clears away heat and toxic material, removes dampness to relieve itching, dries damp, expels the wind, destroys parasites, and has strong epiphyte killing function and infiltration function. The medicine can effectively eliminate pathogenic dermatophyte, has good curative effect on tinea manuum and athlete's foot, and has little irritation, low pain degree, light side effect and good curative effect; tinea manuum and athlete's foot have little possibility of relapsing. 100 cases of clinical experiments show that the effective rate of the medicine is 90%.