The patient, Yang Moumou, male, 80 years old, had advanced gastric cancer with rectal metastasis, severe pain in the left small abdomen, sweating in response to the pain, which could not be relieved for a long time, and had taken tramadol, which was ineffective, and then changed to oxycodone. He was mentally depressed, with a sallow complexion, cold waist and knees, abdominal pain aggravated by cold, tired limbs, frequent stools, occasionally bloody stools, frequent nocturnal urination, 4-6 times per night, light tongue, white greasy moss, weak pulse inch and sunken ulnar weakness. The patient is diagnosed as having cancer pain in internal medicine, which is attributed to the deficiency of kidney yang and the stagnation of yin-cold, and the understanding of cancer pain in Chinese medicine is just “pain without glory” and “pain without circulation”. Therefore, we use Jin Kui Eight Flavors Kidney Qi Pill plus or minus. Prescription: Radix et Rhizoma (first decoction) 15g, Cinnamon (punch) 3g, Radix Rehmanniae 24g, Rhizoma Yam 12g, Cornelian 12g, Zelia 9g, Dan Pi 9g, Poria 9g, Salt Eucommia 12g, Tiantai Wu Yao 9g, Orange Kernel 9g, Yan Hu Suo 9g, decoction in water, one dose per day, at the same time, the left lower abdominal pain point external application of the Chinese medicine “Bone Pain Patch” to help Yang dispel cold, pass the channels and move stagnation. At the same time, the Chinese medicine “Bone Pain Patch” (composed of Black Shun Tablet, Cinnamon, Xian Mao, Hsiang Xin, Dry Ginger, Wei Ling Xian, Whole Scorpion, etc.) is applied externally with vinegar in granule form once a day. The next day after the medication check, the patient felt that the pain in the left lower abdomen was significantly relieved, the discomfort of stool was reduced, and the spirit improved. 7 days after taking the medication and applying the patch, the spirit improved, food intake increased, and the pain basically disappeared.