The invention discloses an external Chinese 
medicine composition for treating 
postherpetic neuralgia and a preparation method of the composition. The external Chinese 
medicine composition is prepared from the following crude medicaments in parts by weight: 10-25 parts of spina gleditsiae, 3-9 parts of pseudo-
ginseng, 3-6 parts of chrysanthemum, 3-6 parts of basil leaves, 3-15 parts of cortex lycii radicis, 3-9 parts of 
semen armeniacae amarae, 3-6 parts of rhizoma cimicifugae, 3-15 parts of red paeonia, 3-15 parts of 
toad, 3-6 parts of felwort, 1-3 parts of 
periostracum cicada, 10-30 parts of calcined concha 
margaritifera, 3-9 parts of 
lithospermum purpurocaeruleum, 3-9 parts of rhizoma arisaematis, 3-12 parts of angelica, 3-15 parts of cortex lycii radicis, 3-15 parts of radix sophorae flavescentis, 3-9 parts of angelica, 1-3 parts of wild ginger, 3-9 parts of 
corydalis tuber, 3-9 parts of Chinese 
lobelia, 1-3 parts of mint, 3-15 parts of ash 
bark, 3-15 parts of 
phellodendron amurense and 0.5-1.0 parts of 
borneol. A preparation method of the external Chinese 
medicine composition comprises the following steps: crushing the above raw materials into 
fine powder; and soaking in 
vegetable oil, and filtering to obtain oil. The external Chinese medicine composition has the advantages of remarkable 
curative effect, no adverse reaction, short 
treatment period, and is convenient for medical use and low expense.