A patient with postoperative pancreatic cancer treated with oxaliplatin chemotherapy (which was discontinued) was hospitalized due to the complication of severe peripheral neuritis and was treated with Chinese herbal medicine to strengthen the spleen and resolve dampness, clear heat and detoxify the toxin, together with acupuncture, and her condition was stabilized. During the surgery and chemotherapy, the doctor prescribed the Chinese herbal medicine Bambusa capsule and Xihuangwan according to the patient’s request. The patient thought that she had not used chemotherapy drugs for a long time and should use these spare Chinese medicines to “fight” the cancer, so she took the capsules on her own, and two days later she had severe nausea and vomiting, which was like adding to her already weak spleen and stomach constitution. Since the doctor who prescribed the medicine to the patient was a western doctor, he was not very clear about the medicinal properties of Chinese medicine and the principles of Chinese medicine in treating tumors, so he casually prescribed the medicine for early stage cancer patients with strong constitution, because although the Zebrano capsule was combined with some deficiency medicine, but with Zebrano as the main medicine, it was easy to hurt the spleen and stomach, which is the major taboo of Chinese medicine. The patient is an intellectual, who believes in TCM, but knows little about Chinese medicine, so she only sees the medicinal effect of Chinese medicine, and does not see whether her disease is suitable for Zebra crystals capsule, thus leading to adverse consequences.