The invention discloses a purely natural external-applied Chinese medicinal medicine for curing anoxemic thighbone necrosis, comprising the following components in weight shares: S 75-100 shares, Cassia Bark 75-100 shares, Dahurian Angelica Root 30-50 shares, Ground Beetle 30-50 shares, Paniculate Swallowwort Root 30-50 shares, Cortex Acanthopanacis 30-50 shares, Dragon's Blood 30-50 shares, Frankincense 30-50 shares, Myrrha 30-50 shares, Rhubarb 30-50 shares, Radix Ampelopsis 30-50 shares, and Rice bean 30-50 shares. And the preparing steps comprise: crushing sulphur into 100-120 mesh powder at 20 deg.C-60 deg.C; crushing Dragon's Blood, Frankincense, and Myrrha into 100-120 mesh powder at-10 deg.C-0 deg.C; crushing Cassia Bark, Dahurian Angelica Root, Ground Beetle, Paniculate Swallowwort Root, Cortex Acanthopanacis, Rhubarb, Radix Ampelopsis, and Rice bean into 100-120 mesh powder at 60 deg.C-80 deg.C; mixing their powder, and mixing the mixed powder with prepared honey into plaster. The product is externally applied without being orally taken, absorbed through the skin, convenient, no-damage, fast curing, having short period of treatment, high-cure rate, good-curative effect for long time, no-toxicity and -side effect, and low cost. And the preparing process and devices are simple and easy to master.