Zheng Yuan capsule is not anti-cancer must take medicine, not all cancer patients are suitable for this drug, the specific use of drugs should be in the professional doctor under the guidance of the discernment to choose to use. Zheng Yuan Capsule is a kind of Chinese patent medicine, which is composed of Epimedium, Radix et Rhizoma Ginseng, Radix Astragali, Tortoise Powder, Turtle Powder and so on, which has the effect of benefiting the qi and strengthening the spleen, tonifying the kidney and filling up the essence. Zheng Yuan Capsule is often used as an adjunctive medicine for tumor radiotherapy and chemotherapy, and is used for kidney qi deficiency syndrome, which is characterized by fatigue (mental exhaustion, physical weakness), lack of energy and laziness (lack of strength, not wanting to speak), shortness of breath, less warmth in the natgut, lumbar and spinal pain, spontaneous sweating (involuntary sweating during the daytime, aggravated by sweating with the slightest movement), weight loss, etc. The adverse effects of this drug are that it can benefit the spleen, tonify the kidney and fill the essence. The adverse reaction of the drug is occasional dry mouth symptoms after taking; Yin deficiency and fire should be cautious of using the drug. The contraindications for the use of Zheng Yuan Capsule are not clear. After the appearance of discomfort should consult a doctor in a timely manner, under the guidance of the physician’s diagnosis and selection of medication, not self-medication, so as not to delay the condition.