Vitamin B6, which belongs to the B vitamin group of nutrients, is not an antiemetic and has no antiemetic effect. But in patients with stomach problems accompanied by vomiting, often apply this drug treatment, the principle of treatment can be analyzed from two aspects: the first aspect, the direct intravenous administration of the drug, directly reflects its nutritional role, the role of nerve nutrition, for the stomach pain has a certain relief, so indirectly to achieve the role of antiemetic. The second aspect, acupuncture injection treatment, is reflected in two aspects: one is similar to western medicine’s intramuscular injection, which also has a nerve-nourishing effect. The other one is similar to the acupuncture treatment in Chinese medicine, which is an extension of acupuncture treatment, and the drug and acupuncture both stimulate the acupuncture points to achieve the effect of antiemetic.