Vitamin B6 is widely found in animal liver, fish, eggs, meat, as well as fruits, cereals, legumes, nuts and other foods. The content of vitamin B6 in animal foods is usually higher than that in plants, so if the daily diet is not partial, it will not cause deficiency. Patients can choose dietary supplements to maintain their daily nutritional requirements according to their own conditions. In addition, vitamin B6 has a variety of effects, such as reducing vomiting during pregnancy or in cancer patients undergoing radiotherapy, and relieving skin symptoms such as acne and seborrheic dermatitis. Daily diet can help supplement vitamin B6 to relieve symptoms, but not to treat the disease. For severe vitamin B6 deficiency, or the presence of severe pregnancy vomiting or vomiting brought on by radiotherapy, and seborrheic skin diseases, oral vitamin preparations are required for treatment as prescribed by the doctor. For patients with skin diseases, topical vitamin B6 ointment can also be used for treatment.