The invention provides a 
cancer pain plaster composed of nux vomica, 
Hindu datura flower, pendulous 
monkshood root, dried Chinese 
toad skin, paniculate swallowwort root or 
herb, yanhusuo tuber, 
panax notoginseng, and an auxiliary material of 
borneol. One plaster comprises, preferably, 1.0g of nux vomica, 1.0g of 
Hindu datura flower, 1.0g of pendulous 
monkshood root, 1.0g of dried Chinese 
toad skin, 1.0g of paniculate swallowwort root or 
herb, 2.0g of yanhusuo tuber, 1.0g of 
panax notoginseng, and the auxiliary material of 
borneol. According to the technology, authentic pure traditional Chinese medicines are selected, and scientific formulation and rigorous production process are adopted. The materials are refined, and effect is concentrated. An effect can be provided after 20min of application, and a pain-relieving effect can last for 24h. Therefore, a substantial pain-relieving effect can be provided for continuous 
cancer pain. Especially, the plaster has relieving and stopping effects against long-term severe pains. When the plaster is repeatedly applied, no toxic or 
side effect is provided, and 
addiction is prevented. The plaster causes no 
irritation or 
allergy to skins, and is suitable to be used against various pains caused by various 
cancer primary tumors and metastases. With the plaster, patient pain can be relieved, symptoms can be relieved, and substantial pain relieving effects and concentrated pain relieving functions such as 
blood circulation activating, stasis removing, collateral dredging, qi regulating, and stagnation eliminating are provided.